Product name: LED Fishing Pole Light (Battery not included) Product size: 6.1*3cm/2.4*1.2in Battery: need pin type lithium battery (CR425, CR435) Product material: ABS Product features: 1.Illuminating Design: The night fishing electronic rod tip light is designed to provide illumination during nighttime fishing sessions. It emits a bright light that allows you to see the movements of your fishing rod, making it easier to detect bites and catch fish in low light conditions. 2.Versatile Compatibility: This rod tip light is suitable for various types of fishing rods, including sea rods, rock rods, hand rods, raft rods, and casting rods. It can be easily attached to the tip of the fishing rod, providing convenient and effective lighting. 3.Waterproof: The rod tip light is made from high-quality materials that are waterproof and resistant to harsh fishing conditions. It is built to withstand exposure to water, ensuring its longevity and reliability during fishing trips. 4.Energy Efficient: The night fishing rod tip light is designed to be energy-efficient, using low power consumption while still providing sufficient lighting. This allows you to fish for extended periods without worrying about draining the battery quickly. Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can feel free to contact me we will give you some suggestion, but it is for you reference only. Package includes: 1 pc LED Fishing Pole Light (Battery not included)