Bluetooth 5.3 Technology:Experience seamless connectivity with Bluetooth 5.4, ensuring stable and fast pairing with your devices. excellent noise isolation design ,providing a serene audio environment for calls and music. Enhanced Noise Cancellation (ENC):ENC silicon microphone enhances call clarity, reducing background noise for crisp conversations. Ultra-High Definition Sound Quality:F13 speaker delivers crystal-clear audio, elevating your listening experience. Long-Lasting Battery Life:Enjoy extended with a 30mAh headphone battery and a 300mAh charging box for up to 8 hours. Colour:Black Material:ABS+PC Package Contents: 1Pair x earphones 1 x Charging case 1 x Charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.