Ravemen NT101 Smart Turn Signal Tail Light Safety Dance The NT101 gives your bike the signals a car has. Press the handlebar remote and the light flashes left or right with an optional click, so drivers know where you're heading. It also lights up when you brake, projects warning lanes on each side, and sounds a horn when you need attention. When the bike is parked, a vibration alarm helps discourage theft. Features Left and right turn signals, flash with an optional click sound from the wireless remote Brake detection, a 100-lumen brake light for 3 seconds when you slow down Ground warning lanes, project virtual lanes on each side of the bike Horn and anti-theft alarm, a loud horn and a vibration alarm for when the bike is parked Up to 160 lumens, six light modes for day and night riding Auto on/off, turns off after 2 minutes of inactivity and wakes on motion Seatpost and rack mounts included, with USB-C charging SPECIFICATIONSIntended Use City Riding, Commuting Max Output160 lumens Modes High 50 lm (7h) | Mid 25 lm (14h) | Low 15 lm (24h) | Warning Flash 160 lm (14h) | Slow Flash 100 lm (10h) | Turn Signals 115 lm Remote Wireless handlebar switch (coin cell battery)Charging USB-CMount Seatpost (25-35mm, round and aero) and cargo rack mounts included Dimensions126 x 62 x 33mm Weight140g | Ravemen | Nt101 Smart Turn Signal Tail Light 160 Lumens