For Motorola GP series: GP140, GP320, GP328, GP329, GP338, GP339, GP340, GP360, GP380, GP640, GP650, GP680, GP1280. for Motorola HT series: HT750, HT1250, HT1250LS, HT1500XLS, HT1550. Headphone audio accessory adapter with Motorola two-pin plug.
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