Brand name: Udi R/C Model NO.: U27 Item type: Quadcopter Material: ABS Controller mode: Mode 2 Color: Black Channels: 4 Channels Function: 3D tumbling action, up, down, left, right, forward, backward, hovering, 180 degree flip flight, headless mode Remote control frequency: 2.4GHz Gyroscope: Six axis Motor: Brush motor Suitable ages: Above 14 Years old Battery power: 3.7V 450mAh Battery type: Li-ion battery Charging time: About 70 minutes Working time: About 7 minutes Charging voltage: 3.7V Battery of remote controller: 4 * AAA batteries (not included) Item dimensions: 14 * 14 * 3.5cm Item weight: 56g Package information: Package size: 30 * 23 * 7cm / 11.8 * 9.1 * 2.8in Package weight: 431g / 15.2oz Gift box package Notice:This RC model is not a toy and is not suitable for children under 14 years old.Carefully read the instruction before any use, if you are a beginner, it's advisable to be assisted by an experienced adult. Package list: 1 *Udi R/C U27 Quadcopter (with Propeller Guard Ring) 1 * 2.4G Transmitter (mode 2) 1 * USB Charging Box 1 * 3.7V 450mAh Li-Po Battery 2 * Pair of Spare Blade 1 * English Manual