Description: Extremely Bright with 6 Different Mode Low, Mid, High, Flashing, 50% Flashing, Strobe Wide Beam LED Tech Keeps You Safe with 180 Visibility and 168 Lumen Output Lightweight and Attaches To All Bikes Mountain, Road, . Can Be Mounted Vertically And Horizontally Anywhere, Rear Taillight, Front Light, Helmet Light, and More Smart Charge Tech - No Batteries Required, No Installation Required, Water Resistant IPX4 Certified Included In Box - LED Rechargeable Tail Light, Silicone Band Attachment, Micro USB Charging Cable Specification: Number of settings: 6 Is Waterproof: True Waterproof : IPX4 Power supply: Lithium battery 3.7V 500MAH Charging: USB charging, the maximum input does not exceed 5V 1A Use: about 3-6 hours (different lighting mode, use time is different) Size: 10x3x1.8cm/ 3.9x1.2x0.7 inch Net weight: 40G (without packaging) 80G (with packaging) Wide Beam LED Technology Mounts in Seconds Fits All Bikes 6 Different LED Mode IPX4 Water Resistant Low Profile Design Package Includes: 1x LED Rechargeable Tail Light 1x Silicone Band Attachment 1x Micro USB Charging Cable