Opolar 10,000mAh Oscillating Camping Clip Fan WH81 black UPGRADED BATTERY DESIGN: Except for traditional USB outlets, this battery powered fan comes with 10000 mAh detachable battery, working up to 50 hours after fully charged. The battery has Micro-USB port for 2A fast charging, also a power bank for your phones/laptops. WHEREVER & WHENEVER: It is a clip on fan on your baby stroller/treadmill, a room fan on table/floor when you are sleeping/working/in exercise, a camping ceiling fan hooked on your tent and more. This 8” portable fan is also ultra quiet for you to take it to anywhere anytime. AUTO & MANUAL OSCILLATION: Oscillate to share coolness.For specific area, press the 45°/90°button, it will turn left to right in 45°or 90°. If not, the fan will auto rotate 340°horizontally. 90°vertically adjustment always need manual operation. 4 SPEEDS & NATURAL WIND: From gentle breeze to powerful wind, this oscillating fan is suitable for from sleeping baby to sweaty hunk due to the 4 speeds design. The max wind speed is 4.8m/s, gives you quiet cooling, comfortable air flow on even the hottest days. TIMER FUNCTION: 3 time setting for this fan: 8/4/2H, you don’t have to wake up at midnight, ideal...