• Design patent
• semiconductor sensor inside
• warm-up time:within 10 seconds
• response time :within 5 seconds 
• Operation temperature:5-40 ℃
• Convenient to carry by keychain
• Countdown and count-up timer keeps the deadline of your parking
• 3 test steps with LED indication
• test result:

Safety: under 0.02% BAC
Caution: 0.02% - 0.05% BAC
Danger: over 0.05% BAC

• Battery: 2 x AAA alkaline batteries (not included)
• Clock: uses 1 x AG13 battery (included)
• Size: 76 x 35 x 22mm
• print size: 12 x 15 mm