From the website: TECH SPECS Earphone Type: Open-ear Model: OpenReal Color: Black Audio quality Driver: φ16.2mm dynamic driver Frequency response range: 20Hz - 20kHz Audio codec: AAC/SBC Noise cancellation Call noise cancellation: Dual-mic ENC call noise reduction Bluetooth Bluetooth version: Bluetooth 5.3 Effective Bluetooth range: 10m Battery Life Battery capacity: 120mAh Music play time (AAC, default setting, 50% volume)*: 16h Charging Cable charge time: 1h Charging port: Magnetic charging Please feel free to ask for more photos or info. Reasonable offers welcome!