Specifications include, but are not limited to: OTICON SENSEI SP BTE; Fully Digital, Super Power Directional, Dedicated Pediatric Behind the Ear Hearing Aid; FEATURES: Speech Weighted, Modulation Based Noise Reduction; Adaptive Directionality; Automatic Dynamic Feedback Cancellation; Uses DSL V5.0 AM (I/O); NAL-NL2, NAL-NL1, NAL-RP and DSE Rationale; LED Visual Status Indicator; 16F frequency Channels; Easy Fitting Software Able To Demonstrate Noise Reduction and Amplification During Fitting; Sound Indicator For Programs and Low Battery Warning; Volume Control; Telecoil; Wind Noise Protection; Moisture, Sweat, and Humidity Resistant; Dedicated Pediatric Fitting Software; Interchangeable Sound Hooks, Including Pediatric Sound Hooks; Tamper Resistant Battery Door, Direct Audio Input, Child Care Packaging.