R03L1 1 Pair RIC Digital Hearing Aid Noise Reduction Bluetooth Sound Amplifier for Deaf ElderlyAdvanced DSP Technology: The R03L1 is equipped with 10-channel Wide Dynamic Range Compression (WDRC) and 10-channel low expansion, delivering clear sound quality in various auditory environmentsApp Customization: Users can personalize their hearing experience with four different adjustable programs via the mobile app, allowing for a tailored listening experience that ensures optimal comfort and clarityIntelligent Noise Management: With advanced background noise suppression, wind noise reduction, and adaptive feedback management, the device enhances speech clarity, providing a natural and immersive hearing experiencePersonalized Settings: The app allows users to fine-tune their preferences with an equalizer and smart volume learning, while intelligent voice spectrum analysis optimizes speech intelligibility for better communicationRechargeable Design: The device offers hassle-free use with features like automatic volume and program memory, low battery alerts, and a rechargeable lithium battery that provides over 15 hours of continuous use on a single charge. The charging case provides an additional three full charge cycles, ensuring uninterrupted hearing support throughout the daySpecifications:90dB Output Sound Pressure Level: Max: 50dB Saturated Output Sound Pressure Level: Max: 405dB / Avg: 355dBFrequency Range: 200~5000HzHarmonic Distortion: 500Hz: 5% / 800Hz: 5% / 1600Hz: 5%Equivalent Input Noise: Working Time: >15 hoursOperating Voltage: DC 3.0~4.2VCharging Time: 3 hoursBattery Capacity: Charging Case: 600mAh, Hearing Aid: 30mAhPackage included:2 x Hearing Amplifier 1 x Charging Case 1 x Charging Cable 1 x Wax Guard and Tool 6 x Earplugs 1 x Cleaning Brush 1 x English User ManualPackage included:2 x Hearing Amplifier 1 x Charging Case 1 x Charging Cable 1 x Wax Guard and Tool 6 x Earplugs 1 x Cleaning Brush 1 x English User Manual