Description CYCPLUS AS2 Mini Portable Pump for Bicycle Cordless Air Inflator Presta Schrader Valve Outdoor MTB Bike Accessories Specifications: Size: 65*46.5*28mm Weight: 97g Material: Aluminum Battery: 7.4v*300mAh Charging mode: Type-C 5V 1.5A Current: 2.5-5.5A Sustainable inflating time: about 200s Max pressure: 100PSI Charging: Charge It with a suitbale charger. It takes about 25 minutes to fully charge the inflator. And the indicator light will flash in red when charging and turn green when fully charged. It can pump for about 200s on one full charge. Notes: 1. Fully charge the inflator before use. 2. The inflator may get hot during operation and please use It with the silicone case. 3. Press the inflator against the valve before and during inflation, and adjust the position to prevent air leakage. 4. It is normal to feel a sense of traction when pulling the inflator off a presta valve after inflation. 5. For more details about the operation, please check our user manual coming with the package box.