Hearing Amplifier Brand: Sagis 2025 Latest Model In-Ear Type 4-Level Volume Adjustment, Easy Operation Automatic Power ON/OFF Compatible with Both Ears Up to 20-30 Hours Continuous Use Charging Case Provides 200 Hours Additional Charging Lightweight 3.5g Type-C USB Charging Full Charge in 2 Hours No Battery Replacement Needed Natural and Clear Sound Instruction Manual Included Dedicated Box Included Disinfected Purchased this year, used for about 2 days, but selling because it was too sensitive for me.