CROSSRC Scale Backpack Speaker Unit for 1/10 RC Crawlers (97401142) Hydraulic Excavator Model 3、场地选择：

3、场地选择：

Integrated LED Light System: Factory-installed headlight and taillight kits (controllable via transmitter) for realistic night trailing

It features a hidden front pillar and a fully tilting cab for an ultra-clean look

Hydraulic Oil (#32 or #46)

Punch in a 3S LiPo battery

CROSSRC Scale Backpack Speaker Unit for 1/10 RC Crawlers (97401142) Hydraulic Excavator Model 3、场地选择：CROSSRC Scale Backpack Speaker Unit for 1 10 RC Crawlers (97401142) Specifications Voltage Input: DC 5V 9V Max Power: 5W (Max Current: 1A) Internal Storage: 4MB Audio Format: MP3 Dimensions: 101mm 55mm 31mm Weight: 81g Signal Cable Length: 420mm Operating Requirements Requires a free receiver channel controlled by a 3 position switch on your transmitter. Important: Always disconnect receiver power BEFORE connecting the SK3 unit to a PC for audio file