MOTOROLA Radio Earpiece Adaptor / Connector Block for GP340, GP360, GP380, GP620, GP640, GP650, GP660, GP680, GP1280 Made in United Kingdom THE-SECURITY-STORE product direct from authorized THE-SECURITY-STORE retailer or fulfilled by Amazon. THE-SECURITY-STORE headsets are 100% exactly as described and as seen on the pictures and features a 90 day "NO QUESTIONS ASKED" money back guarantee. It is secured to the accessory connector on the side of the handheld with a single screw. This THE-SECURITY-STORE high quality brand new adapter / connector block in classic mat black is perfect for the job and works with the following radios: GP1280, GP140, GP318, GP238, GP320, GP328, GP329, GP338, GP339, GP340, GP360, GP380, GP620, GP640, GP650, GP660, GP680, GP1280, HT1250, HT750, HT1250-LS, HT1250-LS Plus, HT1550, HT1550-XLS, HT750, MTX8250, MTX8250LS, MTX850, MTX850LS, MTX9250, MTX950, PRO5150, PR860, PRO5350, PRO5450, PRO5550, PRO5750, PRO7150, PRO7350, PRO7450, PRO7550, PRO7750, PRO9150, PTX700, PTX760, PTX780 etc If you want to use two pin earpiece with your multipin Motorola radio, you'll need a two pin adapter to use with two pin Motorola earpiece