Made of high-quality engineering plastic material, strong and durable. Small and exquisite shape, lightweight, easy to install and carry. The lamp is waterproof and can be used on rainy days. Features USB charging for repeated use. Designed to attach to a fishing rod handle. Power button is located at the back; press to switch on. Blue light illuminates when turned on, indicating operation. Gravity technology automatically turns the lamp on when the fishing rod is lifted from the rod rack. Specifications: Battery: 300mAh lithium battery Suitable for fishing rod handle diameter: 18-24mm Charging mode: USB Light source: LED Feature: Gravity induction Runtime: Up to 12 hours Charging voltage: USB 5V Charging time: Approximately 2 hours Charging indicator: Light flashes during charging; steady light indicates full charge Color: Black Material: Plastic Size: 75 x 30mm Package Contents: 2 x Lamp 2 x USB cable 4 x Rubber band Note: Lighting and display differences may cause slight color variation between the image and the actual item. Measurement error allowed: +/- 1-3cm.