Features: The shell is made of quality plastic material, sturdy, lightweight and durable. Lamp adopts premium LED, bright with long service. Rechargeable design, standard USB port, with bonus power cable, you can charge the light with power bank or computer. Excellent waterproof performance, can withstand harsh weather conditions. The front lamp has 3 brightness modes and a flash mode, enough for various riding conditions. The tail lamp has eye-catching red color, keeping your safety in night cycling. With a handlebar mount for easily install light onto bike, and can be rotated 360° to fit your different needs. Specification: Material: Plastic Color: Black Brightness: 300lm Front Lamp Mode: Low; Middle; High; Flash Tail Lamp Mode: Low; Middle; High; Slow Flash; Fast Flash; Strobe Front Lamp Power Supply: Built-in 3.7V 1200mAh li-lion battery Charging Method: USB Charging (4.2-4.5V) Waterproof: Rainproof Suitable for 20-31mm / 0.79-1.22inch bike handlebar Head Lamp Size: Approx. 10 x 8.5 x 3.5cm / 3.9 x 3.3 x 1.4inch Tail Lamp Size: Approx. 8.5 x 2.8 x 1.8cm / 3.3 x 1.1 x 0.7inch Weight: Approx. 208g Package Included: 1 x Front Lamp 1 x Tail Lamp 2 x USB Cables 1 x Front Lamp Mount 1 x Tail Lamp Mount