Dual Ear Call Center Headset Compatible with AT&T Syn248 Business Phone and Xblue X16 headset Call Center headset compatible with AT&T Syn248 Business phones model SB35025 and SB35031. Xblue IP7g Universal IP Phone, Xblue X16, X25, X50 phone sets Comes with RJ9 Quick Disconnect cord direct connects to Syn248 phones headset jack Premium voice quality. With Noise cancellation. Rotatable, flexible microphone boom. Over-the-Head Style, 2 earpieces (speakers) on both ears Light weight, leatherette ear cushions, Tangle-Free coiled Quick Disconnect cord. 2 Years Manufacture Warranty Included!