About this item. Safety tire pump and warranty TONSIM cordless tire inflator, built-in lithium battery protection panel, battery overcharge protection, over discharge protection, short circuit protection.We provide 2 years warranty and full life service, don't worry about any after-sales problems. Electric tire inflator in humanis design The hand cylindrical air pump combines functionality and beauty. The accessories are stored in the body of the machine so that you don't worry about losing them. Portable mini air pump The size of the air pump is 2.2 * 8.9 inches and its weight is 336g, which is suitable for cycling and travel.You can put a wireless air inflator in your bike or bag and take it anywhere. Smart bike pump and Automatic This electric tire pump 4 kinds of unit values PSI, BAR, KPA, Kg / cm2, after connecting the tire valve, the current tire pressure is displayed, so you can monitor the tire pressure any time. The air pump automatically stops inflating when the inflation reaches the preset value, which can be prevented from inflating excessively. Multifunction compressor air pump 3 in 1 function with LED light and electric charge. No need to worry about being unusable in a dark place. The 1000mAh battery can also help you in an emergency. Besides, the accessories can also help you inflate other equipment. .