The high-end Sina HYPE 12 G4 hearing systems with Tech Level 12 technical features offer comprehensive solutions for customized hearing systems. The Sina HYPE 12 G4 in-the-ear model is a small hearing system that can be used for a broad spectrum of different types of hearing loss. The program button integrated in the battery compartment makes the system very easy to use. The hearing systems can optionally feature wireless functionality, so they can be wirelessly connected to other audio devices and operated by remote control. A smartphone app is available to allow wearers to conveniently adjust hearing programs and volume.