If you are satisfied with our products, please give us five-star rating. Welcome to our store. I hope you have a wonderful shopping experience. Thanks! Specifications: It is suitable for fisherman, fishing, entertainment, outdoor and so on. You can install the alarm on the fishing rod, tie the line and turn on the power switch device to fish. The length of this product is 8.5cm, the width is 3.5cm and the height is 4.5cm. Accurate pull and return alarms allow you to avoid premature rod pulls. And the anti-theft feature makes it very reliable and practical to use. With the high-brightness warning light, it is obviously visible even from 100 meters away. Having the adjustable sensitivity and volume, it allows you to adjust it according to your needs. Made of plastic material, it is very durable to use. Item Name: Fishing Bite Alarm Sensitivity: 5-300g Features: High Sensitivity, Anti-theft, Easy to Install Battery: 2 x AAA Batteries (Not Included) Material : Plastic Manual : no Size Details: Size: 8.5cm x 3.5cm x 4.5cm/3.35" x 1.38" x 1.77" (Approx.) Strap Length: 12.7cm/5" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Fishing Bite Alarm