Switch Mode: switch (This is the switch design,tightening the head of flashlight and the lamp light is open.and then to the right loosening some,the lamp light is closed.and then to left tightening will open again. ) This product is convenient and practical for family standing; Special operational needs (such as levee patrol, inspection, search, site inspection, security, first aid at sea, night observable, etc.); Outdoor activities (hiking, camping, hunting, survival, hiking, dive sea, Chuigou, etc.) Main Features: reflector / lens / light cup Gold-plated internal components, to that each component can be normal contacts work well, fully the circumstances under which the campaign Can be a long life. High quality can be used for more than 100,000 hours, which eliminates the trouble of replacing the lamp Item Type: Flashlights Length: Non-adjustable Lighting Distance: 100-200 m Lumen: 800 Charger: Not Applicable Waterproof: Yes Zoom: No Certification: ,RoHS Function: Shock Resistant Battery Type: 18650 Switch Mode: High/Middle/Low Wattage: 7W Light Source: LED Bulbs Flashlight Type: Diver Support Dimmer: 2-4 files LED: -L T6 3500LM Battery: 1 X 18650 Batteries(Batteries not included) The main purpose: Diving diving depth: Less than =50m Light Modes: Strong colour: Light yellow Material: plastic+ Aluminum alloy size: 12*4*4CM Package Contents: 1 * flashlight (not including battery) 1 * wristband Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.