AceFast AceFit Open Wearable Earbuds – White | FA002Connectivity: Bluetooth 5.4Audio Decoding: SBC / AACSpeaker Type: 3-magnet ultra-linear dynamic coilSpeaker Size: 20 x 8mmDiaphragm Material: CompositeFrequency Response: 50Hz 20kHzEarbuds Battery: 60mAhCharging Case Battery: 500mAhEarbuds Working Time:Music Mode: Approximately 6 hours at 60% volumeCalls Mode: Approximately 5 hours at 60% volumeTotal Working Time: Approximately 25 hoursEarbuds Charging Time: Approximately 1 hourCharging Case Charging Time: Approximately 2 hoursCharging Input: USB-C, DC5V / 0.7ASize: 78.9 x 62.6 x 24mmTotal Weight: Approximately 54.8gWaterproof Rating: IP54