Surefire Custom E2dSpecs.1. Triple XP-L HI Warm White U4 7A2 3000~3500K2. Carclo 10507 Clear Narrow optic3. Astrolux S1 A17DD-L FET+1 Flashlight Driver Only for single li-ion battery.   (3672mA tailcap current measured with LG HG2 3000mAh unprotected cell)4. Noctigon DTP Copper mcpcb5. Custom copper Heatsink6. 0.5㎟ copper strand wire (AWG20)7. No waterproof8. 18mm bored body fits with unprotected 18650 battery.Driver UIWhile off: - Fully click and release to turn the light on. It will go to the first mode or the last-used mode, depending on whether you enabled mode memory. While on: - Short tap: Do a short (less than 0.5s) half-press to go forward to the next mode. - Med tap: Do a medium (0.5s to 1.5s) half-press to go backward to the previous mode. - Long tap: Do a long (longer than 1.5s) half-press to reset to the first mode (if mode memory is turned off). - Or fully click and release to turn the light off. Hidden modes: - Go backward from moon to access the hidden modes. They are, in order: - Turbo (just like the regular turbo) - Tactical strobe (10 Hz) - Battery check / beacon mode (each blink represents about 25% of a full charge) 0 blinks: < 1% full (< 3.0V) 1 blink : 1% to 25% full (3.0V to 3.5V) 2 blinks: 25% to 50% full (3.5V to 3.8V) 3 blinks: 50% to 75% full (3.8V to 4.0V) 4 blinks: 75% to 100% full (4.0V to 4.2V) 5 blinks: > 100% full (> 4.2V) - Biking flasher (2-level stutter beacon, 1 Hz) Configuration options: - Short tap rapidly a bunch of times (15+ taps, or until the light stops turning on) to enter soft config mode. The way it works is the light will blink twice for each option, then pause for a bit before moving to the next option. Turn the light off between the two blinks to toggle that option. The available options are: - Mode group: 7 modes or 4 modes: Group 1: moon, low, med1, med2, high1, high2, turbo Group 2: low, med, high, turbo - Mode memory toggle - If CONFIG_STARS is defined, you can ground pin 3 of the MCU to enable mode memory instead of using config mode. This can often be done by soldering a star on the spring side of the driver, if your driver supports that. Otherwise, it's pretty easy to make a solder bridge from pin 3 (mode mem toggle) to pin 4 (ground). Or even just wedge a piece of metal between the two pins. Other details to note: - Low-voltage protection will progressively step down the output at about 2.8V, and the light will shut itself off when even the lowest level gets below 2.8V. - The default turbo step-down is 45 seconds. - When turbo steps down to high, a short tap will push it back up to turbo or a medium tap will step down further, even if you got to turbo by going backward from moon. The step-down effectively moves it from the "hidden" turbo back to the non-hidden turbo. - A short tap from any hidden mode will return to the lowest mode.- Current will be varied it's condition. Above output is measured by LG HG2 18650 battery- This light is for only single li-ion battery with unprotected cell.- LG HG2 or Sanyo NCR18650GA or Panasonic NCR18650PF etc.- Head is opend. No waterproof. If you want waterproof, use epoxy on head's thread.- Battery is not included.- Custom modified Mcclicky switch is included but not installed. - Registered airmail is default option. I need up to 10 business day to ship it.- No returns or refunds. Only I can accept if light is not turn it on.- Send message if you have any questions.