Product parameters: Product name: Tire humidifier Product material: ABS / PP / PC / silicone / electronic components Water tank capacity: 250 ml Amount of spray: 30-50ML/H Use time: continuous spray about 4H; intermittent spray about 8H Product size: 78*78*150mm Product color box size: 80*80*153mm Packing Quantity: 60PCS Single net weight/gross weight: 225g / 275g Style: black style, white style Battery version Product name Tire humidifier Battery capacity 250ml water tank Working current 250-400mA Using 8w power Spray volume is 30-50ml/h Rated voltage DC5V Product size 78*78*150mm Battery capacity 800mAh Charging time is about 1.5 hours Usage time is about 2 hours Product weight 250g Follow the steps ①Turn counterclockwise and unscrew the top cover ②After unscrewing the top cover, add water to the water tank ③Turn clockwise Clockwise, tighten the top cover and connect to power source ④Click the button to start working Cotton swab operation method</p > Absorbent cotton swab: soak the cotton swab before use When replacing the cotton swab, be careful not to lose the bottom spring, so as not to affect the use</ p> ①Charge the spring ②Insert the cotton swab ③Connect the top cover Please allow slight deviation in the measurement data and ensure make sure you don't mind before ordering.