BHT-600 Chargers & Cradles CU-601 - CradleRS232 (Serial) Communications and Charging Cradle for DENSO BHT-600 CU-621 - CradleSingle slot USB Communications and Charging Cradle for the DENSO BHT-600 CH-651 - CradleSingle Slot Charging Cradle for BHT-600 Series Mobile Computer