Get close to ears,very comfortable: The ergonomic design makes it more comfortable to wear. Working time: A single battery life is 4.5 hours.Silicon microphone ceramic antenna.Real brass ring horn plus counterweight iron. Noise reduction technology: Intelligent call noise cancellation. Two-channel call, intelligent noise reduction effectively reduces environmental noise, and calls are clearer. Large-capacity charging case: Put the earbuds into the charging compartment and they will charge automatically. Bluetooth 5.4: Lossless level processor. High-end level processors connect faster, last longer, and consume less power.
Model: EB-W03 Bluetooth version: V5.3 Working range: 10M Charging time: About 1.2 hours Music time: About 4.5 hours Earphone standby time: About 40 hours Earphone battery: 3.7V 30mAh Charging case battery: 3.7V 300mAh Frequency response: 100Hz~20KHz