Ten Unique Innovations 1. Internationally leading PCC BD970 multi-satellite, multi-system kernel 2. Built-in transmitter-receiver, exchangeable base and rover 3. Original 1+X multi-module communication units in the industry 4. Extreme distance plugin radio station optional 5. Strongest waterproof, dustproof, broken-resistant performance in the industry 6. With intelligentialized self-diagnosis function 7. Double battery capacity, with 4400mAh capacity for a single battery 8. Original double GPRS communication function in the industry optional 9. Config multi-function RTK controller iHand 10 Series 10. Original voice navigation RTK controller software in the industry Standard GPRS wireless data transmission unit Optional 3G wireless data transmission unit Optional CDMA wireless data transmission unit Optional built-in transmitter-receiver, V8 compatible Optional high-performance built-in transmitter-receiver Optional built-in transmitter-receiver, imported brand RTK compatible Optional extreme distance plugin radio station Optional high-performance plugin radio Optional original integrated data transmission station