3 step with colored LED indication:
--safety: under 0. 05% bac (0. 25mg / L brac) -green
--caution: over 0. 05% bac (0. 25-0. 4mg / L brac) -yellow
--danger: over 0. 08% bac (0. 4mg / L brac) -yellow and red audible alert quick response and resume count down & count up timer keep the deadline of your packing clock use 1*ag 13 battery
(included) alcohol tester use 2*"aaa" alkaline batteries (not included) unit size: 76*35*22mm
3 step with colored LED indication:
--safety: under 0. 05% bac (0. 25mg / L brac) -green
--cautio