150PSI Portable Pocket Bike Electric Air Pump Schrader Presta Valve Road MINI Fast Rechargeable Compressor Tire Inflator

Before use, please note if there is already gas in the inner tube

There are 2 cases as below：

Inflating a hollow inner tube: first connect the pump to the inner tube valve and then start the pump to inflate the inner tube.

Replenishment of an inner tube that already contains air: start the pump first, switch on the inflation mode and finally connect the pump to the inner tube valve to inflate it.

digital display : Yes Hign-concerned Chemical : None Type : Electric Material : Plastic Origin : Mainland China Certification : CE,RoHS