Convoy flashlight T4, MAO (Micro Arc Oxidation) processed. I don't know much about metal processing, but the feel is different from a regular aluminum model, more like a smooth or rough texture similar to a ceramic knife. It has only been tested for functionality, and the included accessories are the box and lanyard only. Batteries are not included. 【Shipping is not available to Hokkaido and Okinawa】 Main specifications: ・LED: Nichia 519A 5700K ・Operates on a 14500 lithium-ion rechargeable battery or two AA alkaline/Ni-MH batteries ・Reverse clicky switch (full press to turn on, half-press to change output) Since it uses two batteries, avoid mixing old and new batteries, and use batteries of the same level. According to review sites, the maximum lumen values are 700/300 (14500/AA). Output can be switched from the following 12 groups: Group 1: (1%, 10%, 30%, 100%) Group 2: (1%, 10%, 35%, 100%, Strobe, Bicycle, Battery Check) Group 3: (100%, 35%, 10%, 1%) Group 4: (1%, 20%, 100%, Strobe, Bicycle, Battery Check) Group 5: (1%, 20%, 100%) Group 6: (100%, 20%, 1%) Group 7: (1%, 10%, 50%, Strobe, Bicycle, Battery Check) Group 8: (1%, 10%, 50%) Group 9: (50%, 10%, 1%) Group 10: (20%, 100%) Group 11: (100%, 20%, Strobe) Group 12: (100% only) Mode memory can also be enabled or disabled. A paper with the setting instructions will be included with your purchase. If you find it troublesome to change the settings, I can set it to your desired configuration before shipping, so please let me know.