Brookstone - Compact Noise Cancelling Headphones Rich, powerful sound in a compact package; Bluetooth connectivity allows you to listen to music and make calls without wires; true Wireless pairing so you can pair 2 Mini Blasters together for stereo sound; durable exterior designed to withstand the elements Volume up/down and Track Skip forward/backwards functions; sports a rechargeable battery that provides 8 to 10 hours of play time; Bluetooth technology: v2.1 + EDR, A2DP, AVRCP, HFP, HSP; Bluetooth wireless; pairs with any Bluetooth-enabled audio device Wireless range: 10m or 33 feet; rechargeable speaker; power: 5 watts RMS x 2; frequency response: 200 - 20,000 Hz Charging output: 5VDC 500mA, 5VDC1A; includes USB charging cable, USB to AC Adaptor and auxilary cable Dimensions: 8.6" wide x 3.75" high x 1.75" deep / 21.85 x 9.5 x 4.5cm