Feature: - 5 superbright red LED indicators and 2 laser beams for enhanced visibility at night - LED indicators and laser beams can operate simultaneously - Projects a "bike logo" pattern behind the bicycle to alert following vehicles and promote safe distance - Adjustable clamp for easy installation and removal - 4 flashing modes for increased visibility - Auto-off function after approximately 5 minutes of inactivity to conserve battery power Specifications: - Durable construction with fine workmanship - Requires 2 AAA batteries (not included) - Equipped with 2-button control (on/off and mode selection) - Waterproof rating: daily life waterproof - Light color: red - Housing color: black and red - Dimensions: approximately 8.6 x 3.1 x 4.9 cm - Fits bicycle handlebars or seat posts with diameters between 20-36mm Package Includes: 1 x Laser Bike Tail Light 1 x Bicycle Mount