Convoy S21B black 21700 flashlight

PARAMETER

【Material】:  The bezel is made of stainless steel. The body is made of aluminum alloy. The surface is Type III hard anodized.
【Lens type】:  Ar-coated glass lens

【Reflector】: made of aluminium alloy, the reflective surface is vacuum-coated.
                       orange peel for 519A / XHP50.3 / B35AM
                       smooth for SST40 / SFT40 / LML2AW.DC / KW CULPM1.TG / KW CSLPM1.TG / KP CSLPM1.F1 / 719A

【LED MCPCB】: Made of DTP copper, The underside of the MCPCB is filled with 3.0 W/(m·K) thermal grease.

【Head structure】: integrated type (Best structure for conducting heat, but please note that fast heat transfer does not mean fast heat dissipation, which depends on the surface area of the flashlight.)

【Switch】: reverse type, Au-coated phosphor copper spring soldered on the PCB, it can bear max 10A current ,no need to add bypass.
【Tail】: The edges are chamfered. The U-shaped groove makes it easy for the thumb to click the silicone button. The single-sided double rope hole makes the rope not affect the handstand of the flashlight.

【Low voltage warning】:  Yes
【Reverse polarity protection】:  Yes
【Mode memory】:  Yes
【Temperature control function】: Yes except for ramping, As the temperature rises, the current will drop slowly, but this does not mean that the surface of the flashlight will not heat up.
【Tailstand】:  Yes
【Battery included】:  No
【Required battery type】:  standard unprotected 21700 lithium battery ( length less than 71mm)
【Required battery quantity】: 1pcs
【Length / Diameter】 : 124.4mm / 27.2mm
【Weight】: 91.6g
【Accessory】: 1*lanyard

4 modes   
0.1%-3%-30%-100%

12 groups:
1.click the switch to turn the flashlight on/off,tap the switch to select mode
2.if 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 active the mode memory or inactive it,If the user has no operation,flashlight will enter into the last mode.

battery-check  instructions:
 <2.95V    1 flash,
2.95-3.25V  2 flashes,
3.25-3.55V  3 flashes,
3.55-3.85V  4 flashes,
>3.85V     5 flashes