The RETC 15 RT28 Two Way Radio Walkie Talkie by Retevis is a reliable calling system with 13 channels for clear communication. This UHF radio operates on analog communication protocol with 16 channels stored in memory for easy access. With a sleek black design and powered by DC3.7V, this walkie talkie is perfect for various applications in China or other regions. Its compact size and durable construction make it a convenient and efficient tool for staying connected on the go.