Product name: bicycle tail lamp
Material: plastic
Size: 7.1 * 2.1 * 2.2cm
Parameters:
Modes: 4 modes
Net weight: 43g
Charging time: 2 hours
Running time: 4-8 hours
Battery: 3.7V, 600 mah battery
List of accessories:
1 * Bicycle tail lamp
1 * Charging cable