Callez RJ9 office telephone headset with advanced noise-cancelling microphone and wideband sound. This Mono landline phone headset features good noise cancellation technology for clear and natural calls, and single-ear design is ideal for users who prefer to open an ear to your surroundings during calls. Perfect for Call Center, Business, Office, Home, etc. Crystal Clear Conversation Wideband Sound RJ9 office phone headset provides natural and truly clear conversations, Noise Cancelling Microphone reduces background noise and Acoustic Shock Protection (ASP) protects your hearing. Super Lightweight & Comfortable Weighs only 56g/1.97oz. Super lightweight RJ9 telephone headset with adjustable headband and soft leatherette ear cushion brings no burden to your head and ear, enhances all-day wearing comfort, allowing you to focus on the calls. Convenient In-line Controls Conveniently adjust this landline phone headset volume up/down, mute/unmute the microphone. Easy to use, directly plug the headset into the RJ9 Headset Port on your Yealink landline phone and you’re ready to talk. Friendly Notes: This telephone headset ONLY works for some specific phone models with 4-Pin RJ9 Jack. NOT comes with 2.5mm jack, 3.5mm jack or USB jack. DO NOT BUY IT FOR CELL PHONES OR COMPUTERS. Compatible Phone List (Include but not limited): DO NOT BUY THE ITEM IF YOU CAN’T FIND YOUR PHONE MODEL IN LISTS, CONSULT US FOR COMPATIBILITY ADVICE. Compatible with: Yealink: SIP-T19P T20P, T21P, T22P, T26P, T27P T28P, T23G T27G T29G T32G, T33G T38G, T40P, T40G, T41P, T41G, T41S, T42S, T42G, T46G, T48G, T48S, T49G T53W T54W T56A T57W T58A Grandstream: GXP1200, GXP1400, GXP1405, GXP1450, GXP1610, GXP1615, GXP1620, GXP1625, GXP1628, GXP1630, GXP1760, GXP1780, GXP1782, GXP2000, GXP2010, GXP2020, GXP2100, GXP2110, GXP2120, GXP2124, GXP2130, GXP2135, GXP2140, GXP2160, GXP2170, GXP2200, GXP280, GXP285, GXV3005, GXV3006, GXV3175, GXV3240, GXV3275 IP Phones Snom: 300, 320, 360, 370, 710, 720, 760, 820, 821, 870, D715, D725, D375, D785 Avaya: J139 J169 J179 1608, 1616, 9608G, 9611G, 9620, 9621G, 9630, 9640, 9640G, 9641G and 9650 IP Phones (This headset is only compatible with these specific Avaya phone models in lists, other Avaya phone models are not compatible. For other models, please ask us for Compatibility Guide or Advice. ) Panasonic: KX-T Series phones such as: KX-T2310, KX-T2315, KX-T2365, KX-T2368, KX-T7220, KX-T7230, KX-T7330, KX-T7420C, KX-T7433, KX-T7665, KX-T7740, KX-HDV130 Cisco: 7902, 7905, 7905G, 7906G, 7910, 7910+SW, 7911, 7912 IP Phones (This headset is only compatible with these specific Cisco phone models in lists. Do not buy the item if you can't find your Cisco phone model in lists, please ask us for Compatibility Guide or Advice. ) Cortelco Fanvil: C58, C58P, C62, C66 Obihai: OBi1062 Alcatel temporis: IP200, IP800 AltiGen: IP805 Aastra: 6737i Wildix Phones: WP410, WP480, WP480G, WP490, WP490G Ooma Phones: 2602, 2602W, 2603, 2612, 2613, 2624W, 2615W, 2670W Zultys: ZIP 33G, ZIP 36G, ZIP 37G, ZIP 43G, ZIP 45G, ZIP 47G, ZIP 49G, ZIP 33i, ZIP 35i Huawei: ET325, ET523, ET525, ET685, eSpace 6805 6810 6830 6850 6870 7810 7820 7830 7850 7870 Mono RJ9 Quick Disconnect Telephone Headset Dual RJ9 Quick Disconnect Telephone Headset Mono RJ9 Telephone Headset Dual RJ9 Telephone Headset Add To Basket Add To Basket Add To Basket Add To Basket Customer Reviews — 5.0 out of 5 stars 1 4.2 out of 5 stars 51 4.8 out of 5 stars 12 Price £19.95£19.95 £31.95£31.95 £23.95£23.95 £25.99£25.99 Noise Cancelling Mic ✓ ✓ ✓ ✓ In-line Controls ✓ ✓ ✓ ✓ Headset Style Monaural Binaural Monaural Binaural Quick Disconnect ✓ ✓ No No Headset Jack RJ9 Jack RJ9 Jack RJ9 Jack RJ9 Jack Ear Cushion Type Soft Leather Soft Leather Soft Leather Soft Leather Compatibility Work with Grandstream, Yealink, Avaya, Snom, etc. Work with Grandstream, Yealink, Avaya, Snom, etc. Work with Grandstream, Yealink, Avaya, Snom, etc. Work with Grandstream, Yealink, Avaya, Snom, etc.