Bike Computer with Solar Energy Bicycle Speedometer and Odometer Wireless Waterproof Cycling Computer LCD Backlight Automatic Wake-up & Multi-Functions

【2022 NEW DESIGN - SOLAR ENERGY】:With solar panel,speedometer for bike mph can automatically charge in the sunshine or light, provide extra power to the cycling computer while built-in 2 batteries to keep your ordinary electricity need.Environmental, 【AUTO SLEEP & WAKE UP FUNCTION】:After no signal inputs of 300 seconds, the screen of bike speedometer wireless will go into a standby sleep mode with LCD displays. When you shake the bike computer or any signal is inputted or any button is pressed,th, 【WIRELESS & WATERPROOF DESIGN】:Wireless and Waterproof Design makes bike mile tracker more convenient and durable.Never worried about the complex in install the wires on your handlebars,No need to worry about rain.Simple installation that only takes, 【DAY & NIGHT BACKLIGHT】:Speedometer for bike provides backlight and large LCD display for easy viewing during dark hours.The backlight will automatically turn on for 4 seconds per time between 17:00 and 07:00,press both button to keep the light on. G