【One Size Fits Most】Including acoustic coil tube, connector, an earbud, small and light, easy installation, it fits securely in ear and very comfortable.【Compatibility】The acoustic tube is designed for most brand of walkie talkie. Such as Motorola, Baofeng, Retevis, Midland, Kenwood.【Advanced Design】LUITON acoustic coil tube is constructed by good silical gel. We pay attention to the details of production. It's extremely durable and lightweight.【Variety of Applications】Police, private security, public service, hospitals, bars, restaurants. These security earpieces can be applied to cosplay, role play and many different theme parties.【Warranty】Simple and convenient return process.100% satisfaction guaranteed. Warranty would be valid for 6 months.