Compatible Phones List (included but not limited): Only works for phones with standard 2.5mm headset ports. Not for cell phones and computers. For other phones, please consult with us for compatibility guide and advice. Panasonic: KX-NT136, KX-NT343, KX-NT346, KX-NT366 ,KX-T7603, KX-T7625, KX-T7630, KX-T7633, KX-T7636, KX-T7730, KX-T7735 and more.AT&T: TL88002, TL86103, TL86003, TL76108, TL7610, TL88102, TL86109, TL86009, CL82550, CL82500, CL82309, CL82350, CL80109, ML17928, ML17959, ML17939, ML17929 and more.Vtech: CM18045, CM18245, CM18445, DS6151.Polycom: IP320, IP321, IP330, IP331, SoundPoint Pro SE-220, SE-225.Uniden: DECT4096, DECT1060, DECT4086, DECT4066, DECT3080, DECT2085, DECT2080, DECT2060, DECT1080, D2997, D3280.Cisco Linksys: CIT200, CIT300, CIT310, CIT400, SPA921, SPA922, SPA941, SPA942, SPA962.Cisco SPA: 303, 501G, 502G, 504G, 508G, 509G, 525G, 512G ,514G, 525G2.Cisco: 7985 Unified IP phones.Gigaset: C610 IP, C620H, C430, S79H, S67H, CX610, C610, S850, C470, C455, C455, C450.Grandstream: GXP-2010, GXP-2020, GXP-2100, GXP-2110, GXP-2120, GXP-280, GXP-285, BT200, BT201, GXP-2000 (Version 1.0 higher with 2.5mm Headset Socket) Crystal Clear Communication 2.5mm telephone headset with noise canceling microphone reduces background noise. Wideband sound feature delivers clearer conversations and Acoustic Shock Protection Circuit protects your hearing carefully. Super Comfortable Professional phone headset with soft breathable leatherette ear cushion enhances all-day wearing comfort. Super lightweight headset design and adjustable headband make you focus on your calls and feel less pressure on your ears. Convenient In-line Controls Directly connect the phone headset into your 2.5mm phone port, no additional amplifiers or adapters required. Easily adjust the headset volume up/down, mute/unmute the microphone.