Case material is machined aircraft aluminum with anodized finish
Parabolic shaped LED area optimizes beam performance
5mm white LED, impervious to shock with a 100,000 hour lifetime
Up to 8 hours declining usable output
1.47-Inches length
1.47", Nano Light Flashlight, Super Bright, Tiny Aluminum White LED Key Chain Light, Black Machined Aircraft Aluminum Body, Limited Lifetime Warranty, Weatherproof, Rotary Head Switch, Up To 8 Hour Run Time, Uses 4 LEC1 Coin Cells, Included, For Replacement Battery Use True Value