Note: this product doesn't include the battery, the buyer need to buy by themselves. Features: 1.Lighted nozzle and display screen for ultimate visibility in low light or at night. 2.Digital display instantly and clearly shows exact reading, eliminating the guework of analog gauges. 3.Three units available: PSI, KPA, BAR. 4.Two Functions:Test tire preure and air release function(Release tire air by gently preing). 5.Ergonomic design comfortably fits hand and features a soft, non-slip surface for sure grip. Descriptions: 1.This Mini Tire Preure Gauge with easy-to-read LCD screen. 2.Used to monitor your tyre preure, thereby extending tire life, increasing fuel efficiency and ensuring your safety. 3.It is suitable for measuring tire air preure of cars, motorcycles,etc. Specifications: Measurement range: 0-100PSI; 0.35-7.00BAR Accuracy: 1PSI Resolution: 0.5PSI Unit: PSI, KPA, BAR Display: 22 x 12mm LCD Backlit color: Blue Battery: 1 x CR2032 for tire gauge, 3 x LR44 for LED(not included) Material: ABS & rubber Color: Yellow & black Size:110x45mm/4.29x1.76in Package included: 1 x Tire Preure Gauge Note: 1.Due to lighting effects, monitor's brightne , contrast settings etc, there could be some slight differences in the color tone of the pictures and the actual item. 2.Please allow 1-2mm differs due to manual measurement, thanks.