Ergonomically designed PTT button fits your finger. 1-Pin screw plug for Vertex Standard radios, durable construction. Rotatable ear plug suitable for left or right ear use. Extendable coiled wire for flexible operation. Low-profile design with microphone positioned near the PTT button for clear sound transmission. Ideal for use in restaurants, retail environments, police stations, and other settings requiring reliable communication. Compatible with the following Vertex Standard radio models: VX-110, VX-130, VX-131, VX-132, VX-150, VX-160, VX-168, VX-180, VX-210, VX-210A, VX-228, VX-230, VX-231, VX-298, VX-350, VX-351, VX-354, VX-400, VX-410, VX-417, VX-418, VX-420, VX-428, VX-429, VX-450, VX-451, VX-454, VX-459. Color: black. Material: ABS. Package includes: 1 x Earhook earpiece headset. Other items not included. Note: Lighting and display differences may cause slight color variation between the image and actual item. Measurement tolerance: +/- 1-3 cm.