Features
Emitter: 1* OSRAM KW CSLNM1.TG (Cool White light); / 1* OSRAM KP CSLNM1.F1 (Green light); / 1* OSRAM KR CSLNM1.23 (Red light)
Battery: 1x 18650 (included one USB rechargeable 18650 battery)
Maximum output: 670 lumens (Cool White light); / 1000lumens (Green light); / 250 Lumens (Red light)
Maximum beam intensity: 105625cd (white light) 
Maximum beam distance: 650meters (Cool White light); / 750Meters (Green light); / 350Meters (Red light)
Maximum run time is up to 60 hours 
Working Voltage: 2.8-4.2V 
Driver: Most efficiency constant current circuit 
Anti-reverse battery protection
Over-discharging & over-charging protection 
Waterproof: IPX-8(2 meters under water) 
Impact resistance: 2 meters
Size: 134mm(length) x 40mm (head dia.) 
Weight: 131gram (with battery)
Accessories: Stainless steel clip *1, O-ring *1, Lanyard*1, User manual*1, USB cable *1, USB rechargeable 18650 li-ion battery *1

Brightness levels & runtime (White Light)
Low: 12lm 60hrs,
Middle: 185lm 4.75hrs,
High: 330lm 2.25hrs,
Turbo: 670-450lm 3min - 1.3hrs,
Strobe: 670lm

Battery:

Operation:

1. Complete press the tail switch to turn on flashlight. Another complete press on switch turns it off. Each click to circle: ' Low - Turn off - Middle - Turn off - High - Turn off - Turbo - Turn off - Strobe - Turn off - Low - Turn off' 
2. Half click to turn on one output, another half click to change next output. each half click to circle: ‘Low - Middle - High - Turbo - Strobe - Low'. When you turn on one output you want, please complete press the switch to lock this output. 
3. After you turn off flashlight and it pass less 5 seconds, you can click or half click to next output commonly. 
4. After you turn off flashlight and it pass more 5 seconds, you can click or half click to reinstate the previous output when turned on.

Manker MC12 Reviews:
Forum: https://www.candlepowerforums.com/vb/showthread.php?463863-Review-Manker-MC12-(EDC-Compact-Thrower-1x18650-Micro-USB-rechargeable-Osram)
Forum: http://budgetlightforum.com/node/70874