This bicycle computer with dual power source is a great assistant for bicycle training.

Features:
Multifunction: Speedometer, odometer, trip distance, trip time, average speed, max speed and speed tendency.
Imperial / Metric unit setting.
Digital clock: 12 / 24H format.
Auto shut off: if item is left idle for 5 minutes.
Clear big LCD display, easy to read.
Easy installation, no tools required.
Dual power source: solar panel and AG13 battery.
Ideal assistant for bicycle training.

Specifications:
Power source: Solar panel and AG13 battery
Dimensions: 7.5 * 4 * 1.5cm / 2.0 * 1.6 * 0.6in
LCD Screen: 2.7 * 2.2cm / 1.1 * 0.9in
Package size: 9 * 6 * 4cm / 3.5 * 2.4 * 1.6in
Package weight: 73g / 2.6oz

Package List:
1 * LCD Bicycle Computer with Bracket and Transmitter
1 * Magnetic Screw and Spoke Clamp
4 * Cable Ties
1 * User Manual (English)