Main Features:
Specially designed 2.4GHz 4CH transmitter for single-handed control
360-degree rotations towards different directions
Altitude Hold makes it fly at the same height in the air
One Key to Take off / Land intended for beginners
Super mini size, extremely portable and suitable for indoor flight
Built-in 3.7V 380mAh lithium-ion battery for about 5 minutes' flying
Technical specifications of Syma X21 and X21-S mini
Brand: SYMA
Model : Syma X21, X21-S
Color: White, black
Quadcopter type: mini
Frequency: 2.4G
Channel: 4CH
Gyro:6 Axis
Quacopter Battery: 3.7V 180mAh
Flying time: About 5 Minutes
Charging time: About 50 Minutes
Controlling distance: About 20 Meters
Dimensions
Quacopter Size: 10.5 X 10.5 X 2.5cm
Package Size: 25 X 15 X 5CM
Package Contents
1 X SYMA X21 Pocket RC Quacopter(With 3.7V 180mAh Li-po Battery)
1 X Transmitter
1 X USB Charger
4 X Blades (2 X CW 2 X CCW)
1 X Screwdriver
1 X English Manual