Both right and left ear can be comfortably worn The headset fits securely in the ear for clear audio and privacy during conversations Suitable for use in various environments including nightclubs, bars, security, restaurants, hotels, airports, casinos, manufacturing plants, conferences, concerts, warehouses, and noisy settings Standard two-pin connector: 3.5mm stereo (upper pin), 2.5mm stereo microphone (bottom pin) Two-pin spacing: 11mm Compatible with the following models: KPG27D, KPG29D, KPG48D, KPG49, KPG55D, KPG56D, KPG62D, KPG66D, KPG69D, KPG70D, KPG74D, KPG75D, KPG77D, KPG82D, KPG87D TK-208, TK-220, TK-320, TK-240, TK-340, TK-240D, TK-340D, TK-248, TK-348, TK-250, TK-350, TK-353, TK-260, TK-360, TK-260G, TK-360G, TK-270, TK-370, TK-270G, TK-370G, TK-272G, TK-372G, TK-373G, TK-278G, TK-378G, TK-388G, TK-430, TK-431, TK-2100, TK-3100, TK-2102, TK-3102, TK-2107, TK-3107, TK-2207, TK-3207, TK-2160, TK-3160 Material: ABS Color: Black Package Contents: 1 x Earpiece Headset Note: Light and display differences may cause slight variation in color appearance. Measurement may vary by +/- 1-3 cm.