WT23 Handheld Digital Display Turbine Fan Outdoor Stepless Variable Speed Fan 1. 3000mAh lithium battery, long battery life, meets your cooling needs 2. 35dB ultra-quiet operation, 20000 rpm high-speed motor, turbine wind tunnel design, strong wind power, brings coolness without noise 3. Built-in AI protection chip with overvoltageovercurrentshort circuitbattery protection, ensuring safety every second 4. Type-C interface, compatible with multiple devices for charging 5. Switch button for one-touch activation of cool air, with a roller to adjust wind speed 6. Features a lanyard hole for convenient carrying 7. Smart digital display screen showing battery level and speed settings, clearly visible at a glance 8. Wide range of uses, can be used outdoors, in the office, at home, etc. 9. Lightweight and portable, does not take up space. Parameters 1. Speed settings: 100 stepless speed settings 2. Power consumption: 5W 3. Charging interface: Type-C 4. Input voltage: DC5V-1A 5. Battery capacity: 3000mAh 6. Charging time: about 4 hours 7. Usage time: about 15 hours and 10 minutes on the first gear; about 9 hours and 30 minutes on the second gear; about 6 hours and 8 minutes on the third gear; about 4 hours and 10 minutes on the fourth gear; about 3 hours on the fifth gear 8. Material: ABS + aluminium alloy + electronic components 9. Size: about 7.4 x 4.1 x 16.4cm 10. Weight: about 170g