Compatible with: 99 NEO, 99 CLASSICS, 109 PRO, LIRIC 1.5 m (4.9 ft) OFC Silver Plated Soft transparent TPU coating2.5 mm TRRS/4.4 mm TRRRS balanced connection2 x 3.5 mm TS connection   *This cable is not compatible with 3.5 mm devices, such as smartphones, laptops, or PC.In order for it to work, a 2.5 mm/4.4 mm to 3.5 mm TRSadapter is required.