The Pryme LMC-1GH-M8 two-way lavalier microphone incorporates a comfortable swivel earhook style that can be worn over the left or right ear, large easy-to-clean speaker for comfort and hygiene, 360-degree rotating stainless steel clip, high quality microphone with PTT and molded strain reliefs. The Pryme LMC-1GH-M8 Pryme earpiece and microphone is compatible with Motorola Wave TLK 100 SL300 SL7550 SL4000 SL4010 SL500 PMLN7156A PMLN7158A PMLN7157A PMLN7159A PMLN7159A PMLN7A PMLN7A PMLN7A PMLN7159A 189A.