Material: ABS Material Size of Product: 7x4x2cm Total size with keychain: 12.5x4x1.5cm Instruction ??3 test step with LED indication -- Green Light on: Safety--under 0.02% BAC (or 0.1mg/l BRAC) -- Yellow Light on: Caution--0.02% BAC (... - Update: 2009-10-06

Product Size: 12x3.3x1.5cm Features: 1) Body color: silver 2) With a white LED 3) Uses 3 pieces of AG13 button cell and inclueded, 4) Usage: press the switch, the book light will outspread automatically, and the light will be on at the same t... - Update: 2009-10-06