Power By 4x AA Battery (AA battery is not included) or powered by USB charger powerbank and more. After inserting battery, use USB power supply, the power of the battery is automatically disconnected. Magentic function in the base. magnetic to metal to get hands free,90 degree adjustment design, easy to use. Timing function is more useful,3 gear wind speed, as a gift for girls or boys, Air volume comfort ,close to use ,all seasons, Hand Held fan, desk fan. It is perfect for using , outdoor, travel, or use on holiday, camping or at concerts. Power supply:4xAA batteries (without battery) or DC line charging Modes: 3 modes adjustable Function: timing, magnetic Timing function: 1h, 2h, 4h Size:18x15x6.5cm Color:Black Material:plastic Package Contents: 1 * Fan 1 * Charging Cable 1 * Chinese and English instructions Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.