• Automatically adjust the brightness of the bike light according to the light of the environment
• Five lighting modes, which can be switched freely according to the situation
• 800 lumens, the lighting range is wider and brighter, easily illuminate the road and improve your safety when cycling at night 
• High-definition LED digital display, let you know the power of the lights at any time
• Water-resistant and designed for use in heavy rain
• USB rechargeable, can be connected to a power bank, computer, etc
• Large-capacity 4000mAh battery provides a long working time and it can be used as a power bank to charge your phone
• Use it when you’re cycling, hiking, camping, walking your dog, cycling, changing a tire, night time family/kids activities, enjoy enhanced visibility and comfort at the road

Specification:

• Brand: WEST BIKING
• Material: aluminum alloy
• Weight: 190.5g 
• Battery: 4000mAh
• Applicable bikes: bicycles with a handlebar diameter smaller than 3cm