Features: Durable: The LED flashlight is made of aluminum alloy material, which has excellent durability and anti-drop performance and can be used for a long time in harsh environments. High brightness: The handheld flashlight uses the SST40 LED chip, which is bright and can meet the needs of various scenes such as outdoor exploration, camping, and night work. Multiple modes: The flashlight has multiple modes, and users can freely switch according to their needs, which is convenient and practical. Long battery life: The flashlight is powered by a 18650 battery (not included), with a long battery life, which can meet the needs of long-term use. It also supports reverse polarity protection to prevent battery damage. Simple and easy to use: The torch light adopts a simple and easy-to-use design, with simple operation, and users can easily master it. It also has a memory function, making it convenient for the next use. Specifications: Item Name: Flashlight Material: Aluminum Alloy LED: luminus SST40 5000K neutral white Low Voltage Warning: Yes Reverse Polarity Protection: Yes Lens Type: Ar-coated glass lens Reflector: Smooth Mode Memory: Yes Tailstand: Yes Battery Included: No Required Battery Type: 18650 lithium battery (The battery must be able to withstand 5A or more) Driver: 12 groups, max current output 5000mA, Temperature protection management inside Color: Grey Size: 11.8*2.4cm Driver instructions: (12 groups) 1. Click the switch to turn the flashlight on/off, and tap the switch to select the mode 2. If the flashlight is turned on, tap the switch 20 times quickly to enter into config mode. (On a visual interface, as long as you click on an option, it means that the option is selected. The flashlight has no visual interface. It flashes to represent an option, and "tap the switch in the flashing process" means to select the option.) Option 1 (normal-flash 1 time + buzz-flash): tap the switch to enter into sub-option to select the mode group, If the user has no operation, the config mode will enter option 2. -------------sub-option 1.1 (normal-flash 1 time): tap the switch to select mode group 1 (0.1%, 1%, 10%, 35%, 100%, strobe, biking, battery-check) -------------sub-option 1.2 (normal-flash 2 times): tap the switch to select mode group 2 (0.1%, 1%, 10%, 35%, 100%) -------------sub-option 1.3 (normal-flash 3 times): tap the switch to select mode group 3 (100%, 35%, 10%, 1%, 0.1%) -------------sub-option 1.4 (normal-flash 4 times): tap the switch to select mode group 4 (1%, 20%, 100%, strobe, biking, battery-check, SOS) -------------sub-option 1.5 (normal-flash 5 times): tap the switch to select mode group 5 (1%, 20%, 100%) -------------sub-option 1.6 (normal-flash 6 times): tap the switch to select mode group 6 (100%, 20%, 1%) -------------sub-option 1.7 (normal-flash 7 times): tap the switch to select mode group 7 (0.1%, 1%, 10%, 50%, strobe, biking, battery-check, SOS) -------------sub-option 1.8 (normal-flash 8 times): tap the switch to select mode group 8(0.1%, 1%, 10%, 50%) -------------sub-option 1.9 (normal-flash 9 times): tap the switch to select mode group 9 (50%, 10%, 1%, 0.1%) -------------sub-option 1.10 (normal-flash 10 times): tap the switch to select mode group 10 (1%, 10%, 35%, 100%) -------------sub-option 1.11 (normal-flash 11 times): tap the switch to select mode group 11 (100%, 20%, strobe) -------------sub-option 1.12 (normal-flash 12 times): tap the switch to select mode group 12 (100% only) Option 2 (normal-flash 2 times + buzz-flash): tap the switch to activate the mode memory or inactive it. If the user has no operation, the flashlight will enter into the last mode. Battery-check instructions: 3.85V 5 flashes Package Information: Package Size: 15*4*4cm Package Weight: 100g Package List: 1 * Flashlight