The CatEye Tight Kinetic Rear Light Smart Rear Light is perfect for commuting and road riding. The light achieves 360-degree distribution High brightness, low power consumption design using 5 LEDs. Highly waterproof amp durable against vibration with a long battery life of up to 180 hours and brake light feature that lets people know when youre slowing down. It is equipped with three modes, two flashing modes + 1 constant mode. Mode memory function turns the light on in the last used way. FlexTight (SP-11) bracket can be fast and securely fixed to the seat post, and seat-stay without tools 2x AAA batteries included.Features:Built-in acceleration sensor to detect deceleration under brakingWaterproof design (Waterproof performance: IPX7)Long battery life of up to 180 hoursRugged body with resistance to vibration while ridingAchieves 360-degree light distributionHigh brightness, low power consumption design using 5 LEDsEquipped with three modes, two flashing modes + 1 constant modeEasy sw...