Item No.: SL-W211 LED Beads: XTE / COB Power: 5W / 6W Lumen Output: 300LM (XTE), 390LM (COB) Waterproof Rating: IPX4 (Daily Waterproof) Battery Capacity: Built-in 21700 4000mAh (Single Cell) Material: ABS Plastic Product Weight (with battery): 177.65g Product Dimensions: Length: 210mm, Width: 52mm, Thickness: 38mm Charging Time: 3h 5min Runtime: XTE: High Brightness: 11h 8min, Low Brightness: [Data Missing] COB: High Brightness: 7h 49min, Low Brightness: 30h 3min Operation Functions: Short press to switch modes Front Light Modes: Low → Medium → High → SOS → Off; Double click for strobe Side Light Modes: Low → Medium → High → Red Light Power Off: Short press to turn off after 8 seconds of activation in any mode; Long press to turn off immediately