Cable length: 1m. Connector: Easy Disconnect. Weight (Headset): 86 g. Weight incl. cable: 104 g. Headphone Frequency response: 150 - 6800 Hz. Headphone Impedance: 180 O. Headphone Sound pressure level (SPL): max. 103 dB.

Wearing style: Headband, single-sided. Cable length: 3m (9,8 feet). Connector plug: USB Sound Card. Weight: 70g. Frequency response: 40 – 18,000Hz. Impedance: 32 Ohms. Sound pressure level (SPL): 109dB. Microphone Pick-up pattern: Noise canceling.

Weight: 65 g. Earpad size: ø 50 mm / 1.96 inches. Range: 180m (line of sight). Range: 55m (in typical office building). Talk time: (Wideband Mode) Up to 8 hours. Talk time: (Narrowband Mode) Up to 12 hours. Standby time: Up to 100 Hours.

Wearing style: Single-sided headband. Cable length: 3m/9.8ft. Connector sockets: 2 x 3.5mm. Weight: 60g. Frequency response: 40 – 18,000Hz. Impedance: 32 Ohms. Sound pressure level (SPL): 109dB. Microphone Pick-up pattern: Noise canceling.

Wearing style: Headband, double sided. Cable length: 3m (9.8 feet). Connector plug: USB Sound Card. Weight: 100g. Headphone Frequency response:40 – 18,000Hz. Headphone Impedance: 32 Ohms. Headphone Sound pressure level (SPL): 109dB.

Weight: 22g (ear hook version). Weight: 50g (headband version). Earpad size: ø 50 mm / 1.96 inches. Power supply: Battery (Lithium Polymere). Range: (Line of sight) 180m, (in typical office building) 55m. Talk time: (Wideband Mode) Up to 8 hours.

Cable length: 1m. Connector: Easy Disconnect. Weight (Headset): 58 g. Weight incl. cable: 73 g. Headphone Frequency response: 150 - 6800 Hz. Headphone Impedance: 180 O. Headphone Sound pressure level (SPL): max. 103 dB.

Wearing style: supra-aural. Technology: Bluetooth 2.1 + EDR / Supported profiles: A2DP + AVRCP + HSP + HFP / Codec: SBC, apt-X. Listening time: with / without NoiseGard 8 hours / 10 hours. Talk time: Up to 20 hours. Charging time: 3 h. Weight: 105 g.

Wearing style: Circumaural. Transducer principle: Closed acoustics. Technology: Bluetooth 2.1 + EDR / Supported profiles: A2DP + AVRCP + HSP + HFP / Codec: SBC, apt-X. Listening time: without / with NoiseGard 10 hours / 8 hours. Talk time: Up to 20 hours.

Weight: 85g. Earpad size: ø 50 mm / 1.96 inches. Range: 180m (line of sight). Range: 55m (in typical office building). Talk time: (Wideband Mode) Up to 8 hours. Talk time: (Narrowband Mode) Up to 12 hours. Standby time: Up to 100 Hours.

Spare Headset for Sennheiser DW 20 (DW Pro1).

Wearing style: Headband, double sided. Cable length: 3m (9,8 feet). Connector plug: 2 x 3.5mm. Weight: 90g. Headphones Frequency response: 40 – 18,000Hz. Headphones Impedance: 32 Ohms. Sound pressure level (SPL): 109dB.

Spare Headset for Sennheiser DW 30 (DW Pro2).

Spare Headset for Sennheiser DW 10 (DW Office 10).