Durable & USB Rechargeable - Enjoy long battery life 3-12 hours as both lights use 540 MaH lithium battery which is easy and fast to charge with the USB cables (included 2). They can be recharged with any device featuring USB ports (PC/ Portable charger/ wall charger/etc) and include over-charge protection. Both lights have an indicator for charging status(Charging: flashing red; Fully charged: Solid red)Waterproof: There is no worries about the lights will get wet by rains, waters or drinks spill by accident, water resistant rated to IPX5 - Protected against splashing water from any angle. 100% weather resistant, so you can ride in nearly any weather condition.Versatile Uses: Bicycle light has universal fit, doesn't matter what bike you're riding, we've got you covered Also good for road bike, mountain bike, cruiser, BMX bike, tandem bikes, trollers, kids bicycles & scooters, cycling, hiking, camping, family activities and more.This is great for cycling at night or in places where visibility and safety are concern. So, just start your next adventure with us.Six Light Mode Options: The Headlight and Taillight feature six different modes of lighting which you can switch with the click of a button. Include high brightness, medium brightness , low brightness brightness, fast flashing, medium flashing and slow flashing. Say goodbye to bulky bike lights with excessive wiring and ensure that you will be noticed any time and greatly ensure your safety.International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.