Surefire Custom E1eSpecs.1. Triple Nichia219A High CRI LEDs2. Carclo 10507 Clear Narrow optic3. Nanjg-105c 2800mA Linear Driver. Input voltage 3~4.5v  (2744mA tailcap current measured with LG HG2 3000mAh unprotected cell)4. Al mcpcb5. Custom copper Heatsink6. 0.5㎟ copper strand wire (AWG 20)7. No waterproof8. 18mm bored body fits with AW IMR 18350- Current will be varied it's condition. Above output is measured by LG HG2 18650 battery- Choose your mode option. See photo of NANJG-105C driver- This light is for only single li-ion battery. I recommend AW IMR 16340 or 18350 battery.- Head is opend. 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.