Dig your way to China with this Kaliwo Excavator. It is an Metal Alloy version.
 
Scale: 1:18
Remote Control Power : Battery
Charging Voltage: 110-220v
Control Channels: 10 Channels
Flight Time: 10 hours
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: 15-20 Minutes
Charging Time: About 240 Minutes
Remote Control Distance:20-30 Meters
Frequency: 2.4Ghz-20Mins Max Life Time