Free Worldwide Shipping
Free Worldwide Shipping
Got a question? Call us!
Back to category

2.8” Large Screen Bicycle Computer Wireless Bike Computer Rainproof Speedometer Odometer Cycling Measurable Stopwatch

100 reviews
100% of buyers enjoyed this product! 1564 orders
US $47.98
US $27.82
Total Price:
Best price guarantee
View cart
Buyer protection
Safe shopping
Easy returns and refunds
Free shipping worldwide

Waterproof Bike Speedometer

Features and specifications:

2.8 INCH Large Screen Bike Computer
No fear to rainy days/Powerful function/Two sets of data records
Product information:
Size:2.8 inch
Battery:2032 battery
Model:wired and wireless
Backlight color:white, green
Waterproof:daily life waterproof
Feature:backlight, easy to operate, LCD screen
Inspect method:
One hand holds sensor and another hand magnet. Move the magnet up and down to see if there is data display on the screen. (like the right picture)

2.8 inch FSTN screen
Adopt FSTN material. You can read the data clearly from any angles.
Compare size with Band card

Artificial intelligence chip
Save the data even the power runs out
No fear to rainy days
No matter the drizzle or heavy rain, it is ok for you to ride

Backlight function
It is clear both at day and night
Press the left and right button to trigger or turn off the continuous backlight.
Press any button for 4-second backlight.
no backlight at daytime
clearer at night

Powerful function, easy to operate
Press “M” button to switch three interfaces. Lots of functions.

Ⅰ/Ⅱ data record
Can be used in two bikes at same time. Press M button for 6 seconds to switch.
Automatic standby mode and wake automatically
Identify the bike movement automatically and save electricity. (As for wireless version, you need to press button to wake it.)
When no movement, it will be in standby mode automatically to save electricity.
Left:Stop to be in the standby mode
Right:Move to wake

Product details

Dimensions: 2.8 inch
Models: Wired or wireless
Waterproofing: IPX6
Colors: Black
Power supply: 2030 battery
Backlight color: White or green
Installation location: Bike handlebars
Application: bicycle or tricycle

Long battery endurance
only need one 2033 battery
use a coin to open the cover
Extension mount
easy for you read data (only extension mount version has extension mount)
Suitable for 25~31.5MM diameter handlebar
Fits most bikes

Product display

Standard (wired)
• 1 x Cycling monitor
• 1 x Wired base
• 1 x Magnetic head
• 6 x Nylon ribbon
• 1 x Manual
• 2 x Sponge pad
• 1 x 2032 battery

Standard (wireless)
• 1 x Cycling monitor
• 1 x Wireless base
• 1 x Wireless inductor
• 1 x Magnetic head
• 6 x Nylon ribbon
• 1 x Manual
• 2 x Sponge pad
• 1 x 2032 battery

Extension mount (wired)
• 1 x Cycling monitor (battery inside)
• 1 x wired extension mount
• 1 x Magnetic head
• 6 x Nylon ribbon
• 1 x Manual
• 2 x Sponge pad

Extension mount (wireless)
• 1 x Cycling monitor (battery inside)
• 1 x Wireless extension mount
• 1 x Wireless inductor
• 1 x Magnetic head
• 6 x Nylon ribbon
• 1 x Manual
• 2 x Sponge pad

Magnet and launcher installation
Two types are different. Please pay attention.
Wired bike computer
Magnet is fixed by screw. The distance between magnet and launcher should be 1.5~5mm. The head of magnet should be aligned with the upper or lower ends of the launcher.
Wireless bike computer
1. The distance between wireless launcher and computer should be within 60cm. So that computer can receive the signal and work normally.
2.The distance between magnet and launcher should be within 3mm.
3.The magnet should be placed like this picture.
Extension mount installation:
1.Install the extension mount
Unlock the buckle and put the mount on the middle of the handlebar. Adjust angle and screw it tight.(If the handlebar is thin, please put the long rubber spacer.)
2.Install the extension mount
Insert the computer to the extension mount buckle. Push hard to the end. It is finished when you hear sound. (If you don’t install the computer in a right position, there will be no data display.)

Wireless bike computer installation
1. Fix the base on the handlebar
2. Install the computer on the base
3. Fix the magnet on the spoke. Don’t screw it tight in order to adjust it later
4. Fix the wireless launcher through nylon belt
5. Adjust the distance between magnet and launcher. It should be 3mm. When it is over 3mm, adjust magnet position and screw tight.
6. Finish the installation and start to use it.

Base assembly
Remove the screws from the base and switch directions depending on your installation method


We are proud to offer international shipping services that currently operate in over 200 countries and islands world wide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-30 Business days
Canada, Europe 10-30 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
Asia 10-20 Business days
Africa 15-45 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.


Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, if you’d like a refund you can request one no matter the reason.

If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.
If you received the wrong item you can request a refund or a reshipment.
If you do not want the product you’ve received you may request a refund but you must return the item at your expense and the item must be unused.

  • Your order did not arrive due to factors within your control (i.e. providing the wrong shipping address)
  • Your order did not arrive due to exceptional circumstances outside the control of gadjetdeals (i.e. not cleared by customs, delayed by a natural disaster).
  • Other exceptional circumstances outside the control of

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

Real customer reviews

100 reviews
100% of buyers enjoyed this product!
5 stars
4 stars
3 stars
2 stars
1 star
verifed buyer
13 Aug 2019 08:13

Fast shipping, good product, easy to install and the screen is very large.

verifed buyer
13 Aug 2019 07:16

Fastening on a thick fork. Will not suit everyone. Had to be wise to put and check. The wireless sensor can only be put at an angle and have to catch the position of the magnet to work. In this case, fixing the connection for a long time is possible only with glue. Clamps are unreliable, it would be better to have gum. Works only on the front wheel, with the rear no longer catches. I advise you to take wired.

verifed buyer
12 Aug 2019 13:02

Very good product! Fast shipping! Thank you!

verifed buyer
11 Aug 2019 03:47

I ordered two, put on two bicycles, rolled in a pair, the readings of the distance traveled vary about twice, on my 39 km. And on the second 17 km, installed completely the same. I will understand

verifed buyer
10 Aug 2019 07:34

Norm, but on the fatbike did not fit the attachment to the plug, at an angle the signal does not catch, but in parallel do not put.

verifed buyer
8 Aug 2019 21:24

Pros: Great screen, big and very easy to read. Loads of functions (average speed, temperature, calories, etc). Cons: As is common with cheap products, the instructions are printed as small as possible, and are not very clear. You have to be careful about the orientation of both the screen mount and the sensor, otherwise it won't work... and the instructions are no help, you've just got to figure it out for yourself. My advice is not to connect any of the cable ties until you're sure you've got it right (I had to cut them all off and try again). Once I finally got it all installed, it's been working well. It has a lot of functions, and that means initial setup and changing settings is complicated, but you don't have to do that often. Just switching between display modes and turning on the backlight is simple enough. Overall I'm pretty happy with it.

verifed buyer
7 Aug 2019 19:56

Very good, excellent meets all specifications

verifed buyer
7 Aug 2019 09:02

All good goods consistent with the description, fast shipment but I have to write about damage which the dopatrzyłem, when checking or counter works found that sensor does not detect motion, to check what is this cause odkręciłem screw located on the handle them and found that kabelek one of sensors in the handle is oderwany, Fast repair and counter works. Counter clear at all angles viewing, also in sunny days. Although this small fault RECOMMEND.

verifed buyer
5 Aug 2019 10:16

Good computer! Accurately shows the speed and distance, advise the store...

verifed buyer
5 Aug 2019 05:15

The goods are good. Stole the speedometer from the child on the second day.

verifed buyer
2 Aug 2019 01:47

Speedometer is excellent! It is possible to use two users. Large screen, excellent illumination, which can be separately turned on at night. All the claimed functions are present. Powered by 2032 battery. I really like it, i was very pleased. Seller umnichka, so keep.

verifed buyer
30 Jul 2019 23:16

Everything is fine!!! Tuned, works!!))) delivery about two weeks!! Seller recommend!!!!

verifed buyer
30 Jul 2019 09:11

There is no shutdown function. We need to take out the battery. And so in principle everything suits.

verifed buyer
29 Jul 2019 12:11

Received in about 22 days, the product is great, just like in the description, i'll try it on a good workout, recommended

verifed buyer
29 Jul 2019 11:01

I paid 15 lira of gumruk in a situation like 2 weeks, but next to it, it would be good if the rubber band were sent

verifed buyer
22 Jul 2019 08:42

To moscow 11 days. Installed everything. Everything works. Happy!

verifed buyer
13 Jul 2019 13:24


verifed buyer
11 Jul 2019 09:50

Everything looks normal .... tomorrow i will check

verifed buyer
9 Jul 2019 10:23

very very nice

verifed buyer
8 Jul 2019 11:40

Everything came as in the description, good quality goods, without marriage, came very quickly!!! Everyone is happy, i advise

verifed buyer
7 Jul 2019 13:42

Fast shipping. Before kirov a little more than 2 weeks. Everything works. The only negative is not in the performance table for wheels 29 and in the computer something will crack. Good packing of goods. For this money the best choice. I recommend the store.

verifed buyer
5 Jul 2019 16:12

The goods came quickly. Quality is good. Checked everything works.

verifed buyer
5 Jul 2019 12:06

The bike computer is very convenient, gives all the necessary information at the same time. The thermometer is quite accurate, the speed sensor too. Buttons under the display are touch, work well, press without problems. Questions arise only about the measurement of burned calories and fat, namely the bike computer does not take into account the type of bike (soil type especially), so these data are extremely conditional. On batteries-i will add a tip when the first of them sits. In general, for this money is better, i think it is impossible to find.

verifed buyer
5 Jul 2019 05:50

Sent 24,06 received 04,07. Packed well, in a package with air balloons, as the phones usually send. The battery was installed, in the kit everything you need for installation. The screen is large, when you press the touch buttons, the backlight turns on. The product and the store is satisfied, i recommend.

verifed buyer
4 Jul 2019 09:27

Delivered literally in a week! Clear, fast and clear. Really measure the temperature, speed, time displays, and much more... To check on receipt it is enough to bring a magnet, which ideas in the kit and the device will start to count. If not, then probably defective. I didn't have any problems. I think you won't. The backlight is turned on by pressing the set and mode simultaneously. A beautiful computer for great. And worthy performance. I recommend unequivocally! Like.

1 2 3 4
More reviews
Write a review
© Copyright 2019. All Rights Reserved

Shopping cart