About Product: Product Name: EP03 Sound Headset Feature: Battery Capacity: 300mAh Standby Time: Up to 300 hours—great for extended use over several days without needing to recharge 🌙🔋 Charging Time: 2.5 - 3 hours Music Playback: Provides 5 hours of continuous listening 🎶 Audio Output Options: Can be used in both wired and wireless modes for versatility 🔌📶 Sensitivity: 75dB—balanced audio, suitable for casual listening TF Card Support: Supports memory cards from 128MB up to 32GB, allowing offline music playback without needing a Bluetooth connection 🎵💾