Adjustable 638nm 1.2W/2.1W Orange Red Light Diving Explorer Light DS7 1.2W single beam 2.1W dual beam Specification parameters: Dimensions: 135.3 * 33mm Front and Rear Circles Shell material: aviation aluminum Surface treatment: Fine sand matte black Output wavelength: 638nm Gear setting: single or two gears, always on and dazzling (default is single gear) Switch mode: self-locking constantly on, off or lightly touch to shift gears Center wavelength: selected Output power: 1.2W/2.1W Average power: optional Safety level: Class IV Circuit control: constant current boost drive Circuit efficiency: Conversion efficiency of over 93% Spot form: Point like Beam Style: Continuous Linear Spot size:<Φ 15-18mm at approximately 5M Focusing method: adjustable focus Focusing method: Rotate the threaded front cover to achieve zoom Diving level: 5-meter diving Working current: Depending on power and wavelength Battery type: rechargeable lithium battery cell Battery direction: Negative tail switch, positive pole facing towards light output direction Working voltage: DC=3.7V Starting voltage: DC=2.5V