Qualcomm BT 5.2 Chip: Fast and stable transmission speed, lower power consumption, built-in Qualcomm flagship chip can achieve ultra-low latency, Aptk Technology: Compared with AAC and SBC, the aptx audio codec can show more sound details. Polymer Composite Diaphragm: Provides you with dynamic sound effects. Four Microphones and CVC Noise Reduction Call Function: Ensure your call quality. Special Ear Wing Design: Comfortable to wear, a single headset earbud weighs only 4.2 grams, and can fit your ears stably. Low Latency: to the Qualcomm chip, the headset can provide a lip-sync streaming . 26 Hours Battery Life: A single charge can last for 7.5 hours of playback, and the charging Box can extend the battery life to 26 hours. Optional color: Gray / White Material: ABS Pairing name: QCY-T17S BT version: 5.2 Available system: IOS / Android Operation range: 10m Battery life: 4.5hr of calling; 7.5hr of playback BT profiles: HFP / HSP / A2DP / AVRCP Battery capacity: 380mAh(case); 30mAh(single earbud) Top-ups by case: 2.5 ( for both earbuds) Charging port: Type-C Package size: 13*9*4cm Package weight: 100g