HQRP 20V Car Charger for Bose SoundLink I II III Wireless Mobile Bluetooth Speaker, Sound-Link 1 2 3, 343641-1310 17817548656 404600 Power Supply Cord Sound Link 414255 DC to DC Adapter plus Coaster HQRP&reg; Car Charger plus HQRP&reg; Coaster; Input: 12V DC; Output: DC 20V; Safety Features: High Efficiency and Reliability; Automatic Overload cut-off; Automatic Thermal cut-off; Short circuit and Over Voltage protection; Low Interference & Noise; 200 days warranty!