Thank you for viewing. This product has been discontinued, making it difficult to obtain. Available for immediate purchase. Will be packaged with bubble wrap for shipping. The following is quoted from the website regarding usage instructions. Equipped with a CREE XHP35 HI, achieving a maximum of 2500 lumens with a beam distance of 1180m. Features a robust body that withstands a 1.2m drop and high waterproof performance, withstanding submersion in 5m of water. Overall Length: 174.7mm, Head Diameter: 70mm, Body Diameter: 25.4mm, Weight: 229.5g (approx. 297g with battery) 【Brightness/Runtime】 When using an ACEBEAM 21700 (5100mAh) Ultra-Low: 1 lumen, 30 days Low: 150 lumens, 15 hours Mid: 550 lumens, 4.5 hours High: 1400 lumens, 1.5 hours Turbo: 2500 lumens, 1.6 minutes then 1400 lumens (78 minutes) Strobe: 1400 lumens, 2.5 hours 【Side Switch Operation】 ON/OFF: One click to turn on when off. One click to turn off when on. Ultra-Low: Long press the switch when off. Brightness Adjustment: Long press the switch while on to cycle through Low → Mid → High. Release the switch to maintain that brightness. Turbo: Double click. Strobe: Triple click. Lockout: Function to prevent accidental activation. Long press the switch for 3 seconds or more when off, it will blink and lockout is complete. Long press the switch for 3 seconds or more during lockout, it will blink and then Ultra-Low will turn on, releasing the lockout. *Tail switch operation is still possible during lockout, so to completely lock it out, loosen the tail cap. 【Tail Switch Operation】 The tail switch is for Turbo only. Half-press the switch for momentary on, fully press for constant on. 【Charging/Power Supply】 Charging and power supply can be done with the included USB-Type C cable while the rechargeable battery is installed in the light. The indicator on the body lights red during charging and green when complete. Lights blue during power supply. 【Heat Generation】 Checked the heat generation during operation indoors at 14°C. The area around the side switch, which is close to the LED chip, gets hot, but not much heat is transferred to the head. Results may vary depending on temperature changes, so please consider this as a reference only.