15 channels S size:3.7v 500mAH lithium battery（ included）
12/13 S/M size: 3.7v 800mAH lithium battery（ included）
Frequency :2.4G MHz
Channel :12/13/15

Features:
【 Small 15 Channels 】 Lights, music, forward, backward, left turn, right turn, left and right rotation on the spot, independent forward digging of the boom, independent reverse push of the boom, left turn of the bridge, right turn of the bridge, 1-click demonstration, small arm rising, small arm falling, forward digging of the bucket, reverse push of the bucket
【12 Channels 】 Lights, music, forward, backward, left turn, right turn, left and right rotation on the spot, 1-section forward excavation of the boom, 1-section reverse push of the boom, left turn of the bridge, right turn of the bridge

【 13 Channels 】 Lights, music, forward, backward, left turn, right turn, left and right rotation on the spot, 1-section forward excavation of the boom, 1-section reverse push of the boom, left turn of the bridge, right turn of the bridge, spray

Packing List:
12/15 Channels :
Excavator *1
Remote Control *1
Lithium battery *1
Charging cable *1
Instruction Manual *1

13 Channels:
Excavator *1
Remote Control *1
Lithium battery *1
Charging cable *1
Instruction Manual *1
Water injector *1