CBK 3.5mm Jack Receive Earpiece For Motorola Radio Mic XTS1500 APX4000 APX6000 APX7000 XTS5000 RLN5312A HT750 RLN4941A Fast Shipping from CA, US. ConditionNew Generic Product,100 % Compatible. Most Radios with 3.5mm headset jack or Hand mic with 3.5mm headset jack Lengths 510