Feature: 1. Automatic Induction Device 2. Vibration and Collision Filters, 3. Pole Mount or Pad Mount 4. Can be Used Continuously For 35 Hours After Full Charge, 5.6 Flash Mode. 6.USB Charging. 7. Compact and Design. 8.IPx6 Waterproof. 9. Automatic Adaptation of Horizontal Angle Smart Brake Tail Light, Photosensitivity, Strong Upgrade, Vibration Brake, Photosensitivity, 6 Modes of Lighting, Fresnel Optical Design Cost-effective Brake Sensor Light: Send 2 Kinds of Fixing Brackets; Brake Speed Can be Seen, Brake for 3 Seconds , Conventional Activate The Brake, Instant Highlight, Brightness During Cycling, Brightness Index 100, Lights up After , Brightness Index 150 Bright LED Lamp Beads, Fresnel Perspective Lampshade Vibration Sensing, Automatic Function, Stand Still For , Flapping Vibration Photosensitive, Automatic Start and Stop Design, Always Bright, Breathing Flash, Slow Flash, Flash, Rhythm Flash, Energy Saving Flash, Note: This Data is Official Reference Data Portable Charging, The Charging Buckle Has a Rubber Sealing Cover, Waterproof and Dustproof When the Lights go Out, Turn Off the Stand-alone Button to Display the Remaining Power Strap Fixed, Installed on Round Pipe, High Elastic and Durable Rubber Ring, Also Suitable for Diameter Seatposts, Installation , Fix The Base on The Round Tube, Tail Light Snaps Into Base Sitting Bow Fixation, Mounted on the Bottom of The Saddle, Sturdy Without Taking up Space, Rain and Scratch Resistant, Installation , Install the Base Under the Saddle, Tail Light Snaps Into Base Color: Black & Red Material: Aluminum ABS+PC Package Contents: 1 x Bicycle tail light Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.