Type : Open, Circum-aural Digital
Wireless Range : Up to 320' (97.54m)
Transmitting Frequency Range : 2.4-2.48GHz, Auto-Selecting
Impedance : 32 Ohms
SPL : 110dB
THD : <0.5 % (1 kHz, 100 dB SPL)
Frequency Response : 18Hz - 21kHz
Charging Time : Approx. 16 Hours
Operating Temperature : 0oC to 40oC (32oF to 104oF)

Power :
Battery or AC Power
2 NiMH-Akkus Typ AAA, 1,2 V, 600 mAh
Rated Input : 100-240 V, 0.2 A, 50/60 Hz
Rated Output :5 V DC, 500 mA
Weight - Headphones : 204g (7.20 oz) (Without Batteries)

Headphone Charging Cable
2 x Rechargeable AAA Batteries