Surefire Custom E1eBody is E1L body, Old E head with no crenelated bezel styleSpecs.1. Triple Nichia219B 4500K Neutral White 90+ High CRI LEDs2. Carclo 10507 Clear Narrow optic3. Astrolux S1 A17DD-L FET+1 Flashlight Driver Only for single li-ion battery.   (3808mA tailcap current measured with LG HG2 3000mAh unprotected cell)4. Noctigon DTP Copper mcpcb5. Custom copper Heatsink6. 0.5㎟ copper strand wire (AWG 20)7. No waterproof8. 18mm bored body fits with AW IMR 18350Driver UI   While 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. I recommend AW IMR 16340 or 18350 battery.- Head is opened. No waterproof. If you want waterproof, use epoxy at 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.