WIRELESS RANGE:50 feet (15 meters)
IMPEDANCE:32 ohms, 1 kHz
SENSITIVITY:105 dB SPL/mW, 1 kHz
FREQUENCY RESPONSE:20 Hz - 20 kHz
CONNECTION:Bluetooth or 3.5 mm (1/8 inch)
BATTERY TYPE:rechargeable battery pack (included)
BATTERY LIFEver 20 hours of listening with analog input, over 10 hours of listening with wireless connection*
* Actual battery life will vary with use, settings and environmental conditions. Rechargeable batteries have a limited number of charge cycles.