Hearing Amplifier for Elderly 【2025 New Design, Easy Operation, Automatic Power ON/OFF】4-Level Volume Adjustment, Voice Amplifier, Up to 20-30 Hours Continuous Use, 1200mAh Charging Case Adds 200 Hours of Charging, Ultra-Lightweight, Noise Reduction, Type-C Rechargeable, Battery Level Indicator, Binaural Support, Ergonomic Design, Comfortable to Wear, Discreet In-Ear Design, Father's Day, Mother's Day, Respect for the Aged Day, Birthday Present, Gift, Japanese Instruction Manual Please pinch both sides of the product with your fingers to wear it. Please be careful not to tilt the wearing angle too much (do not get too close to the edge of the auricle). While in use, be careful not to cover the microphone hole with your fingers (covering it may cause feedback).