Features: 1. Automatic power on after locking/power off after detaching, no need to take out the battery. 2. Intelligent motion sensor inside to eliminate disturbance caused by wind or wave. 3. Sensitive to the bait's abnormal movements and instantly give off red alarm flashing light. 4. Can be fitted to the rod with diameter from 1mm to 3.5mm. 5. Easily and quickly clips onto the tip end of the rod and easy to remove. Specifications: Material: Plastic Suitable for: Rod diameter 1-3.5mm Weight: 5g Color: green and red Battery: 1x CR1225 lithium battery(include) Visual distance: 100 meters Position: River,Reservoir Pond,Ocean Beach Fishing Type: Fish Bell/Alarm Installation location: The position behind the tip of rod Battery life: 600 Hours Fish bite: Red light flashed Interference signal: Keep green light Package Included: 1x LED Alert Note: 1. Manual measurement, the size will have an error of 0.5-2mm, please refer to the actual size​​. 2. Due to the difference in light and screen, the color of the product may be slightly different from the picture.