this 'Green Solar ' gage running from 2 CR2032 non rechargeable batteries, one of them was below 1V so unit never came to life, until i replace batteries. other than that it is a nice gadget .
Easily check your tire pressure day or night with this Solar Powered Tire Pressure Gauge by ReThink. Backlit numeric display gives easy to read digital pressure readings in PSI, BAR, KPA & KG/CM2 measure modes. A built-in LED flashlight illuminates valve tips and working area. On the back of the unit there is a pop-out tire depth gauge great for check ups at home, on road trips and more. Built-in solar panel recharges the included internal battery with the power of the sun. Auto-Off function preserves battery life when not in use. Dimensions:. Length: 1.5. Height: 5.5. Width: X