Features: 1.Premium Material: The head light is made of aluminium full body aluminum pure aluminum reflective cup rubber leather headband which is sturdy and durable for long term use. 2.Waterproof Design: This head light is waterproof and it can be used even under water. 3.High Brightness: The head lamp has a high brightness and a long range so you can see clearly even under the water. 4.Large Capacity Battery: The capacity of the battery is large and it can last a long time.This head lamp is light so that it is convenient for you to wear on the head. 5.After-sales Service: If you have any problem please contact us immediately we will help you solve it as soon as possible. Specification: Material: Aluminum Head Diameter: Approx. 3.6cm Width: Approx. 8.4cm/3.3inch Power: 10w Life: 100000 hours Brightness: 1000 lumen Notice: 1.Actual color may be slightly different from the image due to light effect. 2.Please allow 1-3cm deviation due to manual measurement. includes: 1 * LED Headlight Diving Work Light 1 * Charger "