OLIGHT RN120 C Bicycle 120 Automatic Brightness Adjustment Taillight, USB-C Rechargeable, Lumens,

[Photosensitive & Motion Sensor] This product is equipped with a photosensitive sensor and a motion sensor, which intelligently adjust the brightness and lighting mode. In smart settings, the high-sensitivity infrared sensor automatically adjusts the brightness according to the ambient lighting conditions. The motion sensor automatically illuminates at 120 lumens for 3 seconds when the brakes are applied, making your presence known to vehicles behind you and ensuring safety. [Five Lighting Modes] It features five lighting modes (Normal Low Mode, Normal High Mode, Flash Mode, Energy Saving Mode, and Smart Mode), with a maximum output of 120 lumens and a maximum viewing distance of 1500 meters, improving visibility during nighttime riding. Operation is simple; just click to switch between lighting modes. [Easy Installation & USB-C Charging] Equipped with mounting straps, a saddle mount, and tie bands, this taillight can be attached to seat tubes and cushions with a diameter of 22-33mm without the use of tools. It also supports USB-C charging, fully charging in about an hour. When off, clicking the switch will display the battery level. [260° Visibility Range] The translucent shell design provides a wide 260° visibility range. This enhances visibility during nighttime driving, improving visibility not only to vehicles behind but also to those to the side. Driving safety is significantly improved. [IPX6 Waterproof & 1m Shockproof] This product meets the IPX6 waterproof standard, so you don't have to worry about it malfunctioning due to wind and rain during use. It has also passed a drop test from a height of 1 meter, demonstrating its shockproof performance. It's ideal for a wide range of uses, including road cycling, city riding, and daily commuting. Specifications: Maximum output: 120 lumens; Maximum runtime: 20 hours; Maximum range: 19.5 meters; Beam angle: 260°; Size: 30*34*32mm; Weight: 26g; Temperature range: -20°—40°; Voltage range: 3.0-4.2v; Quiescent current: 60UA; Battery: Polymer battery (built-in); Waterproof level: IPX6; Charging cable: Micro USB cable; Charging time: 1 hour; Maximum power: 5.5W; Charging indicator: Red flashing: Charging; Green: Fully charged (light cannot be used at this time)