Description:
USB rechargeable; with built-in battery
IPX4 waterproof
Charging indicator display
Low power indicator display
4 modes:
(1) High bright: about 3-4H
(2) Low bright: about 12H
(3) Flash: about 12H
(4) Slow flash: about 12H
Size: about 8.8 x 4.0 x 3.7 cm ( 3.46 * 1.57 * 1.46 in )

Packing List:
1 x Bike Led light

• 
  Comes with 4 light modes to meet various options.
• 
  LED chip mounted at inner top side, avoiding direct glare to the strong light.
• 
  Well-formed reflector & diffuser, ensuring even light distribution; side visible.
• 
  Built-in lithium battery, USB rechargeable.
• 
  Size: about 8.8 x 4.0 x 3.7 cm ( 3.46 * 1.57 * 1.46 in)

Comes with 4 light modes to meet various options.Luckycyc