•Advanced 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 environments •App 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 clarity •Intelligent 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 experience •Personalized 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 communication •Rechargeable 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 day Specifications: •90dB Output Sound Pressure Level: Max: •50dB Saturated Output Sound Pressure Level: Max: 40±5dB/Avg: 35±5dB •Frequency Range: 200~5000Hz •Harmonic Distortion: 500Hz: 5%/800Hz: 5%/1600Hz: 5% •Equivalent Input Noise: •Working Time: >15 hours •Operating Voltage: DC 3.0~4.2V •Charging Time: 3 hours •Battery Capacity: Charging Case: 600mAh,Hearing Aid: 30mAh Package included: •1 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