Sennheiser Sennheiser RS 5000 Wireless TV Earphone Headphone

Silicon Rubber Ear Coupling Earbuds /15 hz To 16 kHz Frequency Response; 125 dB (at 1kHzm 1Veff) Max. Sound Pressure Level; < 0.5 Percent At 1 kHz, 100 dB SPL THD; Up To 3 Hours Charging Time; Up To 12 Hours Operating Time; Up To 70 m/200 ft Range; Built-In Lithium-Polymer Rechargeable Battery BAP 800 Receiver; Black Finish