Headset Headphones with Volume+Mute Control+Standard 25mm Plug Jack for Cisco SPA Series Spa303 Spa504g and Other Polycom Soundpoint IP 320 330 Grandstream LinksysCortelco

Description: 2.5 mm Monaural Telephone Headset is a headset designed for call center. It is Compatible for the most 2.5MM telephones. With flexible goose neck Mic boom, adjustable headband and soft ear pad, users will have comfortable wearing experience.
Features / unction characteristics: Hands-free 2.5 mm Headset High clear voice communication Compatible for most telephones in call center 150ohms speaker to ensure perfect voice quality Headset head can freely telescopic, moderate elasticity, comfortable to wear Super soft ear cushions make sure comfortable wearing High durability, fully adapt to 7 x 24 hours for high frequency
Specification:
Color: Black
Microphone type: electrical condenser microphone (ECM)
Microphone voltage: 2.0 v
Receiver impedance: 150 ohm
Package: 1 * 2.5 mm Headset 1 * User manualThe 2.5 mm plug is for
Phones: Cisco
Linksys: CIT200, CIT300, CIT310, CIT400 Cisco SPA303, 501G, 502G, 504G, 508G, 509G, 525G 512G 514G, 525G Cisco Linksys SPA921, SPA922, SPA941, SPA942, SPA962 models Polycom IP320, IP321, IP330, IP331, SoundPoint Pro SE-220 SE-225 Grandstream GXP-2010, GXP-2020, GXP-2100, GXP-2110, GXP-2120, GXP-280, GXP-285, BT200, BT201 GXP-2000(Version 1.0 higher with 2.5 mm Headset Socket) Panasonic KX-NT136, KX-NT343, KX-NT346, KX-NT366, KX-T 7603, KX-T 7625, KX-T 7630, KX-T7633, KX-T 7636, KX-T 7730, KX-T 7735 Gigaset C610 IP, C620H
Zultys Technologies: ZIP 4x4, ZIP 4x5 IP PhonesPlus Many Many Cordless Phones with standard 2.5 mm Headset jack.