Libratone/Bird Headphones Air+ Second Generation Active Noise Cancellation True Wireless Bluetooth Headphones

Wing opening and closing｜Matting design with 45°wing opening and closing design, just like a bird spreading its wings Nordic tuning｜5.3mm moving coil unit, perfect sound with three-frequency balance Flagship chip｜Qualcomm QCC5141 flagship chip, fast and stable connection Active noise reduction｜The noise reduction level can be adjusted to eliminate external noise Smart noise reduction｜Exclusive smart noise reduction technology, automatically perceives the environment and adjusts the noise reduction mode Transparency mode｜You can hear the outside world even without taking off the earphones Smart tuning｜Ear-matching, automatic tuning, no matter how you wear it, it sounds good Smart wearing｜Headphone fit test to help you test the fit of earphones Clear Whisper｜Exclusive SVC call noise reduction technology, the call voice is clearly conveyed EQ tuning｜With App, three music modes + smart adjustment Out-of-ear detection｜Light sensor in-ear and out-of-ear detection function, automatically control music playback Audio coding｜Bluetooth 5.2, support SBC, AAC, aptX Full-day battery life｜Single-sided earphones for 6 hours, with a charging box for 24 hours of full battery life Product specifications product specification Product name: LIBRATONE Air+ 2 Accessories: headphone body/ charging box/ USB-C charging cable/ earplugs*4(XS/S/M/L)/ instruction manual Warranty: one year warranty technical specifications Bluetooth chip: QCC5141 Bluetooth version: BT5.2 Monomer size: 5.3mm Frequency Response: 20Hz - 20kHz Audio decoding: SBC/AAC/aptX Battery capacity: 60mAh*2 (headphone); 500mAh (charging box) Battery life: 6/24 hours Waterproof factor: IP54 Headphone size: 22.1*32.1*19.8mm Charging case size: 54.0*50.0*23.6mm Weight: 52.5g (total weight); 5.5g (single ear)