This is the Satzuma Cb mobile handset blue [SZ-CBS100] &bull: Compatible with all 3.5mm jack mobile phones including iPhone, BlackBerry, iPad &bull: Luxurious soft-touch finish for ultimate comfort and feel &bull: Eliminates up to 99% of the radiation absorbed compared to the direct use of mobile phones &bull: Built in answer button & volume control &bull: Power Supply: 2 x AAA batteries &bull: Impedance (ohm): 8 &bull: Freq. Response (Hz): 200 Hz-20 KHz &bull: S/N Ratio (dB): 60 dB &bull: Cord length: 5.00 m ...Contact us if you need more help.