Mono Wireless Headset, Speaker frequency range : 40Hz-16kHz, Speaker Max output power : <118 dBSPL(A), Speaker size : Ø 28 x 3.9mm, Dual Microphone - ECM Uni-Directional and Analog MEMS system, DECT wireless

Bluetooth Headset Mono, Wideband Audio, Triple mic wind & noise canceling, 33 feet/10 meters range

Impedance : 16 Ω, Frequency response (Headphones) : 5 to 46,500 Hz, Max. sound pressure level : 125 dB at 1 Vrms, Attenuation : -26 dB

Impedance : 32 Ω , Frequency response : 18 - 22000 Hz, Sound pressure level (SPL): 122 dB, THD, total harmonic distortion : < 1 %, Ear coupling : intraaural, Jack plug : Jack 3,5 mm

Stereo Wireless Headset, Speaker frequency range : 40Hz-16kHz, Speaker Max output power : <118 dBSPL(A), Speaker size : 2pcs Ø 28 x 3.9mm, Dual Microphone - ECM Uni-Directional and Analog MEMS system, DECT wireless

Headset, Microphone, 3 Wearing Style

Headphone Frequency Response 15Hz - 22000Hz, Headphone Impedance 18 ohm, Sensitivity 118 dB, Headphone Jack 3.5 mm

Frequency : 10 - 28.000Hz, Impedance : 23 Ohm, Sensitivitas : 115dB, Inline Microphone

Headset PC, Microphone, Over-the-head, Binaural

Frequency response (Headphones)42 - 17000 Hz, Sound pressure level (SPL)95 dB, Impedance32

Mono Wireless Headset, Speaker frequency range : 40Hz-16kHz, Speaker Max output power : <118 dBSPL(A), Speaker size : Ø 28 x 3.9mm, Dual Microphone - ECM Uni-Directional and Analog MEMS system, DECT wireless

Bluetooth Headset Mono, Wireless Technology, Up to 120 meters, Talk up to 8 hours, Crystal Clear Sound, HD Voice, Noise Canceling Microphone, Microsoft Skype for Business