Technical Details: Twenty hours 8 hours for the buds and 12 hours for the case Quick Charge: 10 minutes equals 2 hours Turn on the voice assistant. Fit for Isolating Noise Make use of either Bud Auto-On/Connect Solo Bluetooth v5.2 Product Type: Bluetooth® 5.1 In-Ear True Wireless Connection A resistance of 16Ω ± 15% 6mm is the driver diameter. THD: less than 3% Level of Sound Pressure: 104dB ± 3dB Response to Frequency: 20 Hz to 20 kHz 40.59g in weight