The main features of the CCB900 are: Interface between the cradle, the BIV SmartInterface to external antenna, PMR antenna, or dual band PMR/GPS antenna. Management of audio links: to/from Remote Speaker Microphone, loudspeaker, Power supply management for TPH900 5V - 4A (vs 6.5V for P2G)The product is IP40.
Reference: HR9623BA