Fangrui Product Details [all-scene Hearing Aid Noise Cancellation] This Hearing Aid For Seniors Features Intelligent Environment Recognition: Daily Mode With A Single Beep (clear Vocals), Meeting Mode With Two Beeps (directional Noise Cancellation), And Sport Mode With Three Beeps (windproof And Ipx7 Waterproof). One-touch Switching Adapts To Various Scenarios, Including Outdoor, Office, And Gym Use. [extreme Battery Life + Fast Charging] This Rechargeable Hearing Aid Lasts 30 Hours On A Single Charge: The Earbuds And Quick Charging Case Provide 150 Hours Of Battery Life (fully Charged In 120 Minutes). The Charging Case Supports 4-5 Quick Charges (fully Charged In 100 Minutes). The Lcd Screen Displays The Battery Level In Real Time. [intelligent Hearing Enhancement] Four-level Volume Adjustment: Precision Digital Chip Provides 16-35db Amplification. Supports Mild To Moderate Hearing Loss (non-medical Device Disclaimer). [premium Accessory Set] Complete Hearing Aid Set: Charging Case, Cleaning Brush, And Leather Storage Pouch. Two-year Warranty. [no Buttons, No Worries] Hearing Aids Designed Specifically For Seniors, With Automatic Power On And Off. Your Hearing Aids Automatically Power On And Off When You Remove Or Return Them To The Charging Case. They Even Remember Your Favorite Volume Settings. A Clear Led Indicator On The Charger Lets You Know The Charge Status At All Times, Eliminating Charging Hassles.