Icom HS-51, Headset with PTT & VOX for F11/F11S/F21/F21BR/F21GM/F21S Quantity in Basket: None Code: HS51 Price: $106.25 Shipping Weight: 4.00 pounds Suggested List: $125.00 Quantity: Icom HS-51, Headset with Push-To-Talk, VOX (Voice Operated Transmission) and Time-Out-Timer Operation. For IC-F11, IC-F11S, IC-F21, IC-F21BR, IC-F21GM & IC-F21S.