Convoy M21B 21700 flashlight (Shipped from international warehouse)

All models listed on this page are shipped direct from our international warehouse and will take 7-10 working days to be delivered. Quick Overview Material Aluminum alloy Driver 12 configurable mode groups with temperature protection Lens AR-coated glass Protection Low-voltage warning and reverse-polarity protection Convenience Mode memory and tailstand capability Battery 1 × standard 21700 lithium battery (not included) Size & Weight Head / Body 35.7 / 27.1 mm Length 141.5 mm Weight 120 g Reflector Compatibility Orange Peel (OP) XHP70.3 HI, XHP50.3 HI, B35AM, 519A, SFT70, LHP531, LHP73B Smooth (SMO) SFT40, KW CULPM1.TG, SFT-25R LED & Driver Output Choose the correct driver output for your LED model. LED Model Driver Output SFT70 6 V / 5 A 519A 3 V / 6 A SFT40, KW CULPM1.TG 3 V / 8 A B35AM 6 V / 2.4 A LHP531 3 V / 10 A LHP73B 3 V / 20 A Driver Features No visible PWM in any mode, with intelligent temperature management. When the temperature exceeds 55°C, the driver automatically reduces current to lower heat output. The flashlight surface may still become hot during use. Basic Operation Power On / Off Fully click the switch. Change Mode Half-press the switch to cycle through modes. Configuration Mode How to enter configuration mode Turn the flashlight on. Quickly half-press the switch 20 times or more. The flashlight will signal each option with flashes and a buzz. Half-press during the desired flash to select it. Option 1 · Select a Mode Group (1 flash + buzz) Group Select At Mode Sequence 1.1 1 flash 0.1% → 1% → 10% → 35% → 100% → Strobe → Biking → Battery Check 1.2 2 flashes 0.1% → 1% → 10% → 35% → 100% 1.3 3 flashes 100% → 35% → 10% → 1% → 0.1% 1.4 4 flashes 1% → 20% → 100% → Strobe → Biking → Battery Check → SOS 1.5 5 flashes 1% → 20% → 100% 1.6 6 flashes 100% → 20% → 1% 1.7 7 flashes 0.1% → 1% → 10% → 50% → Strobe → Biking → Battery Check → SOS 1.8 8 flashes 0.1% → 1% → 10% → 50% 1.9 9 flashes 50% → 10% → 1% → 0.1% 1.10 10 flashes 1% → 10% → 35% → 100% 1.11 11 flashes 100% → 20% → Strobe 1.12 12 flashes 100% only Option 2 · Toggle Mode Memory (2 flashes + buzz) When mode memory is enabled, the flashlight returns to the last-used mode after it is switched off and on again. Battery Voltage Indicator In Battery Check mode, count the flashes to estimate the battery voltage. Voltage Range Flashes Below 2.95 V 1 2.95–3.25 V 2 3.25–3.55 V 3 3.55–3.85 V 4 Above 3.85 V 5