Specifications: Portable, multiple mode adjustment, easy to use, with 360 degree rotation. Battery life: mode 1 can work continuously for 15-16 hours. Mode 2 can work continuously for 8-9 hours. Mode 3 can work continuously for 4-5 hours. Natural wind mode can work continuously for 8-9 hours. Press and hold any mode for 5 seconds to turn off the fan. Practical clip design and mini size, easy to use and carry. Ultra-long working time, you do not worried about the power. 360 degrees adjustable rotation, brings you cool air in hot summer. USB port, can connect to laptop, adapter, so convenient to charge. With clip, you can stably put on the desktop, to the bedside, etc. Item Name: Cooling Fan Material: ABS Plastic + Electronic Components + Silicone Speed Mode: Mode 1/2/3 and Natural Wind Mode Charging Time: about 4-5 Hours Output Power: 3.76W Max. Battery: 4000mAh, 18650 Type Battery (Included) Features: with Clip, Table Fan, Portable Size: 13.7cm x 8.7cm x 16.1cm/5.39" x 3.42" x 6.34" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Cooling Fan 1 x USB Charging Cable 1 x User Manual