JINYI Improve fishing efficiency---The fishing bite alarm is a device that warns the fish to hook after a period of buffering force. During the buffering period of tension, it is the time when the fish is hooked, the alarm information issued immediately is more reliable, and the success rate of fishing is also high. Easy to use --- The electronic fish bite alarm is easy to operate, just clamp the product on the fishing rod, and then turn on the power switch and the alarm starts to work. Great Fishing Tool --- Sound and LED light alarm unit, perfect for night fishing. This fishing bite alarm is easy to carry. Good choice for recreational fishing. PORTABLE SIZE---The fishing rod bite alarm is small, beautiful, practical and high quality. Battery Type: 3x LR44 Lithium Batteries (Not Included) Quantity: (1-pack) Fishing bite alarm, other products not included Size: Approx. 6.5X6.5X4CM (for reference only) Colour: Black Note, because there may be color and size difference between the light effect photo and the actual product, please allow 1-2 cm error,