You will need some technical  skills to operate and maintain these tanks. All sales are Final, No Returns on these or any of our products. 
2000 MAH battery with color coded red/black plug is included, and will provide limited run times, especially when using a Smoke Unit. A 5000 MAH battery available on Amazon.com or your local hobby shop is highly recommended for longer run times. 
Add a Baroness 2 Smoke Unit for $75 from our Shop page. This is plug and play, and you will need to install this yourself. (Directions included).
The M4A3 Sherman 75mm Metal Edition in airsoft BB version is RTR out of the box. The 13040 features a slightly weathered olive drab paint scheme. This Sherman tank comes with a new design for the lower metal chassis, which is now over 2mm thick with a one piece stamped lower hull. It also comes with a textured metal turret, metal gun barrel, metal hatches, metal VVSS suspension, metal idler wheels, LED headlights, metal road wheels with rubber tires, metal drive wheels, metal caterpillar tracks, steel gearboxes (Steel, 3:1, H/L, 48mm), and more! This tank also comes with our new 360 degree turret rotation system, accessory kit, 2000mAh NIMH battery and charger, dual LED machine guns, a smoke unit, speaker, recoil, Taigen’s newest V2 2.4 GHz transmitter and V3 motherboard, and an easy access hull latch for accessibility.
Since this model uses our V3 electronics you can also use your own 6 channel PWM capable hobby grade transmitter and receiver with this tank. Just follow the instructions in the manual on how to setup! Most brands are compatible, (Spektrum make sure you use a 5V receiver!). TBS Crossfire, FRSky, FlySky, Futaba, JR, etc have all be reported working perfect with minimal to no setup.
Manual : Sherman 75mm Manual is included and is available from the Taigen USA Website 
Features:Includes:
Gearboxes - V1 Steel (3:1, High/Low, 45mm)1/16th Scale Taigen Tank
Firing Unit Type - Airsoft 2.4GHz Transmitter
Turret - Metal Turret with Metal BarrelV3 Taigen Electronics
Upper Hull - Plastic7.2V 2000mAh NIMH Battery
Lower Chassis - Solid Metal7.2V Wall Charger
Drive & Idler Wheels - Metal w/ BearingsAccessory Kit w/ Smoke Fluid
Road Wheels - MetalApproximate Size: 14.8x6.3x7.1"/37.5x16x18cm
Caterpillar Tracks - MetalApproximate Weight: 10.75lbs/4.9kgs
LEDs - Upper Hull & Turret MG & Headlights x2x100 6mm Airsoft BBs (Airsoft Only)
Suspension - Metal VVSS