ROCKBROS Bicycle 2.4G Wireless USB Rechargable Speedometer With Light Bike Computer Cycling Waterproof Stopwatch

Specification:
BIKE LIGHT !#!amp!*!amp; COMPUTER IN ONE
Light source: Cree white LED*2
Light output: 300lm
Battery: SAMSUMG\/LG 2600mAh 3.7V Lithium Battery
Work mode: High - Low - Off
Bike light running time: 3 \/ 6 Hours
Recharge time: about 4 Hours
LCD display with backlight
Current speed: 0.00~99.99 km\/h [mph]
Average speed: 0.00~99.99 km\/h [mph]
Maximum speed: 0.00~99.99 km\/h [mph]
Trip distance: 0.00~99999 km [mile]
Total distance: 0~99999 km [mile]
Clock: 00:00:00~23:59:59
Trip riding time: 00:00'~9999:59'
Total riding time: 0~999999 Hours
Calories: 0~999999 kcal
Bike computer with 2.4G wireless sensor
Auto power saving
Tire size: 100mm~3999mm (default 2095mm)
Sensor battery: Panasonic CR2032 x 1
Sensor size: 36*34*13mm
Product material: PC
Product size : 106*57*35mm
Waterproof: IP45

Features:
Wireless， waterproof， shockproof.
The perfect combination of stopwatch and light.
Easy installation and firm fixation.
Simple， practical， easy to install.
The micro USB can connect power bank， extend working hours.(The power bank is not include).

Package includes:
1 x Speedometer
1 x Holder
1 x Magnet
1 x Quick release mounts
2 x Rubber ring
1 x USB cable
1 x Speed sensor
2 x Sensor ring