Excellent value front and rear USB bike light set. • 60 lumen front • 20 lumen rear • Versatile silicone mounting system Front Light Free yourself from the hassle of batteries! This small but essential accessory helps you be more visible to traffic. Bright side beams throw off additional light, and the silicone mount fits almost any handlebar. A micro-USB cable makes it easy-just charge, click and go! Recharge Type: Micro-USB rechargeable - Charges via any standard USB port (charging cable included) Brightness: 60 lumens Battery Type: Lithium Polymer Recharge Time: 3-hour recharge Mounting Options: Universal Mount - Action-camera-style mount fits most helmets and handlebars 22-35mm in diameter No tools required Product Weight: 20 grams Run Time: High mode: front 2 hours at 60 lumens, rear 1.5 hours at 20 lumens Flash mode: front 3 hours at 60 lumens, rear 3 hours at 20 lumens Water Resistance: IP-65 Ingress protection rating or "IP Rating," is a techy way to describe the level of water- and dust-proofness of a product. This light meets the IP-65 Standard, which means it is totally protected against dust/grit and protected against low-pressure water jets coming from any direction. Rear Light Just press the lens and, click: traffic can see you! A silicone mount lets you attach this powerful little light almost anywhere, and the handy LED fuel gauge tells you when it's time to recharge with its micro-USB cable. A silicone mount lets you attach this powerful little light almost anywhere, and the handy LED Fuel Gauge tells you when it's time to recharge with its micro-USB cable. No more batteries - just charge, click and go! Brightness: 20 lumens Battery Type: Lithium Polymer Recharge Time: 3-hour recharge Mounting Options: Universal Mount - Action-camera-style mount fits most helmets and handlebars 22-35mm in diameter. No tools required Product Weight: 22 grams Run Time: High mode: 1.5 hours at 20 lumens Strobe mode: 3 hours at 20 lumens Water Resistance: IP-65