A perfect set of lights for daytime visibility. 

40 Lumens  - Front 10 Lumens - Rear
USB Rechargeable lithium battery 
Modes: 100% Brightness, 50% Brightness-flash- Pulse, Flash-Flash 
Charge time: 3 hours 
Waterproof IPX4 
Alloy body 
Tool free bracket 
Low battery indicator 
Charging indicator 
Micro-USB rechargeable cable 
Short press to change function, long press to turn off or on