Enya 310 CIC P fully digital hearing aid. 8 Channel and 49dB to 79dB gain. Battery Size 10. Fitting range 20 dBHL to 110 dBHL. Suitable for Mild to Profound hearing loss. Basic Noise Tracket II. Basic Wind Gurd. Directionality- 4 options including soft switching. Digital Feedback Suppression DFS ULTRA II. Phone Now options.