Bowers & Wilkins PI 7 CG; In-Ear True Wireless headphones; true 24-bit Audio-connection; 2-way-driver design; high performance DSP; Bluetooth 5.0 with AptX Adaptive technology; adaptive, active Noise Cancelling (ANC); charge case with audio-transmission; wirelesse and USB-C charge; supports quick charge; frequency range: 10 Hz - 20 kHz; 3 separate mics for telephone communications and adaptive ANC in earphones, distortion: <0,3 % (1 kHz / 10 mW); accu: rechargeabel Lithium-Polymer-accu (earphone and charge case); runnning time: up to 4 hours (earphones), additional 16 hours via charge case, total 20 hours; quick charge: 15 minutes charge for 2 hours running time; weight: 8 g earphone, 50 g charge case, total 66 g, inclusive: 20 cm USB-C to 3,5mm Audio-cable, 20 cm USB-C to USB-C charge cable, Ear-Tips in Small / Medium / Large; colour: Charcoal grey