A rechargeable electric paddle board pump that Inflates 4 boards in one go - inflates to 20PSIThe Outdoor Master Shark 2S is a versatile, two-speed pump equipped with a cooling fan, allowing it to inflate up to four boards consecutively to 20 psi without needing to stop. It also features a deflate option for added convenience. The Shark 2s paddle board pump comes with a rechargable internal battery that can be charged via a USB port adapter, compatible with any plug adapter. Alternatively, it can be powered using the included 12V DC connector, making it easy to plug into your car for convenient outdoor use. Features:1. 20 PSI MAX2. Battery volume: 88.8Wh3. Operating noise: 83 db4. inflating time: 9.5 minutes (300L/15 PSI)5. Inflate & Deflate6. Power supply: battery/ 12V DC 7. Charging method: type c8. Working up to 30 mins constantly9. Inflate/deflate 4 sup boards with full charged(300L/15 PSI)10. Dual-stage inflation11. Auto shut-off12. Real-time pressure monitoring TEST APPROVEDThe Shark 2S has passed multiple efficiency tests with CA65, CE and Ro HS compliant certifications.