Features: 1. Suitable for Los Angeles rod, sea pole, throwing pole, in the reservoir and coast. 2. When the fish bites the hook, the alarm sounds and a light alarm, signaling the angler. 3. The alarm realizes one person controlling multiple rods. Specifications: Model: JY-56 Material: ABS + Electronic components Light color: Green Shell color: Black Use battery: 1x 9v laminated battery (purchased by yourself) Size: 90mm*40mm*40mm/3.54*1.57*1.57" Net weight: 71g Gross weight: 85g Notes: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you 2. Please allow 1-3cm measuring deviation due to manual measurement. Included 1 X Fishing Bite Alarm