Quantity   Component name
1 × LED, CREE XML2 http://www.ledsupply.com/leds/cree-xlamp-xm-l2-leds
1 × Heatsink (for LED) Mouser Part # 588-SV-LED-314E
1 × Lithium Ion 26650 Battery https://www.craftvapery.com/products/mnke-imr-26650-3-dot-7v-high-drain-li-mn-battery
5 × Battery Contacts Mouser Part # 534-1016-1
1 × LED Driver for Flashlight http://www.dx.com/p/1050ma-rhttp://www.dx.com/p/1050ma-regulated-current-5-mode-memory-led-driver-circuit-board-for-flashlight-diy-3-4-5v-127689#.V1t6-sBVg4Megulated-current-5-mode-memory-led-driver-circuit-board-for-flashlight-diy-3-4-5v-127689#.V1t6-sBVg4M
1 × 3D printed parts! http://www.thingiverse.com/thing:1620367