Item NO: HUINA 331 Color: Khaki Remote Control Power Supply: 2 AA Battery (Not Included) Body Battery: Built-In Rechargeable Battery Pack 4.8V 400mAh Material: Plastic + Electronic Components Play Time: 16-20 Minutes Charging Time: About 240 Minutes Remote Control Distance: 25-30 Meters Frequency: 2.4Ghz 20 Mins Max Life Time .The High-capacity 4.8V 400mAh intelligent battery yields up to 20mins life time. - Simulate The Shovel Soil Robot arm. You can lift the robot arm up and down, shove the sand and push the sand, and easily complete it. - 2.4GHz Technology Adopted for Anti-Interference. Strong Grip Rubber Track . Suitable for all terrains, stone piles, sand, cement roads, smooth floors, friction resistance 350 Rotation In Place . Operate the left and right rockers to achieve 350 rotation in place. 1 x Remote Control Truck 1 x Remote Control 1 x USB Charging Cable 1 x Rechargeable Battery Pack (Built-In) Item NO:HUINA 1558 11 Channel Remote Control Power Supply: 2 x AA Battery (Not Included) Body Battery: Built-In Rechargeable Battery Pack 4.8V 400mAh Material: Plastic + Electronic Components Play Time:15-20 Minutes Charging Time: About 240 Minutes Remote Control Distance: 20-30 Meters Frequency: 2.4Ghz Packing list: 1 x Remote Control Truck 1 x Remote Control 1 x USB Charging Cable 1 x Rechargeable Battery Pack (Built-In)