XIAOMI | Portable Electric Air Compressor 2 | BHR7112GLDimensions 7. 5 x 4. 5 x 12. 3 cm Batteries 1 Lithium Polymer batteries required. Noise level 80 dB 25% increase in speed compared to 1S compressor. Can inflate an empty wheel in just 8 minutes Inflation pressure up to 150 psi. It only takes 86 seconds to inflate a bicycle tire Six preset modes. Six different modes for all needs six modes. Manual mode allows you to remember pressure values. Set it up once and say goodbye to cumbersome setups! 2000mAh