●Digital type: LCD display so you can see the measurements at a glance ●Finger Size: 4.3 x 3.0 inches (11 x 7.5 cm) mini type, easy to store in the car ●Auto Off Function: 30 seconds auto-off function, so even if you forget to turn it off ●Usage time: 2 AG13 batteries, can be used approximately 450 times (continuous lighting is 4-6 hours) ●(Requirements for Air Pressure Inspection) The number 1 trouble on the highway in 2020 is "tire punctures, bursts, and insufficient air pressure" (JAF data). Passenger car tires decrease by about 5% after a month (based on JATMA research), so regular tire pressure management is mandatory ●Aftermarket Service: We accept returns and exchanges within 30 days of arrival. For any email inquiry, we will reply you within 24 hours by our support representative