version 7.0 pro version with metal gear box and track + metal wheel and idel wheel and infera battle function, metal rock arm + smoke & sound effect Features Product Size: 3716.520CM Plastic Type: ABS Material: Plastic Rechargeable battery: 7.2v-1700mAh AC-DC Adaptor Frequency: 2.4Ghz (Improved remote control system) Battery for the controller excluded: 8pcs of "AA" size 6m/m Ball bullet: 80~100pcs. Max.firing Range of Motor Air Gun: Appr.25m(With hop-up system) Gun shell:6mm BB shell Load of shells:Aprr.40 shells Max side Turning Angel of Turret (left/right)Aprr.320 degree. Max Vertical Turning Angel of Gun (up/down) Appr.20 degree Max Climbing Gradient (changeable on different road surfaces) Apr.35 degree High speed forward-backward- spin- shoot BB bullets. The barrel moves up and down 30. The turret turns 320 emulation music and action effect. Full-scale R/C function. Realistic suspension system. Full-Scale R/C function simulative motor start-up sound. Engine sound- Machine-gun sound. cannonball sound. Charging time: 1.5-2 hours Playing time:30-40 minutes Brand: Heng Long Item: 1/16 US Sherman M4A3 Tank Item NO.: 3898-1 Color: Weight: About 3600g Main Material: ABS Plastic Drive Gearbox: 848mm Frequency: 2.4Ghz Battery Required: 8AA batteries Battery Required (for Tank): 1SC 7.2V Ni-cd 1700/2000/3000 mAh Rechargeable Battery Charger: 7.2V 400mAh Start-up / Extinguish Set Full Scale R/C Function Shooting Balls Realistic Smoking Function Simulative motor start-up sound, Engine Sound, Machine-Gun Sound, Cannonball Sound Emulational Action Effect The sound can be Adjusted Box Size: 50.519.531 cm Product Size: 3716.5*20 cm