New study specialty product with mutifuntion as below description,The price and MOQ can be negotiated: 1.function: Tire pressure detection, air compressor, led flashlight 2.application scene: Cars, motorcycles, bicycles, swimming ring,balls 3.Super capacity: built-in 3.7V/2000mAh high capacity and high safety 2 batteries in series(2S1P); 4.Lighting function: This power supply integrates a white LED which can be used as outdoor lighting; 5.Air compressor function: This power supply integrates an air compressor which can be used as tire inflation; 6.Pressure detection function: this power supply integrates a digital display barometer, which can be used as pressure detection,the accuracy of air pressure detection is �±0.01Kg/cm 7.USB output: charging for all kinds of digital products and navigation; 8.Ultra high efficiency: 5V/2A charging efficiency 70%; 9.Durable using: built-in battery charge and discharge cycle times 500 times; 10.Safe and reliable: PCBA has power supply short circuit protection design,Built-in lithium battery protection IC,can effectively prevent battery overcharge, overdischarge, overcurrent. Welcome to know more details for further progress,thx for cooperation.