Specially developed sport headphones for serious runners Available in colours suited for workout yellow/black Control for hands-free calls/volume control/play/pause/change sound mode Compact and lightweight charging case with strap hole plus clip-on pouch easy to carry during training Superior fit stays on through hard workout and heavy sweat (Pivot Motion Fit & 3-point support structure) Sweat and rain proof IPX5 rating (earphones) / IPX2 rating (charging case) Truly wireless completely cord-free Total 9 hours of battery life (3+6 hours) Open type earpieces included to let in ambient noise for safe running Transmission Area -Approx. 10m Driver Unit - 8.2mm Magnet type - Neodymium Frequency Response - 20-20,000Hz Power Supply - Built-in rechargeable battery Battery Life (approx.) - 3h (Earphone unit) + 6h (Dedicated Charging Case) Weight (without cord) - 6.5g *one side Bluetooth profile - AVRCP,A2DP,HSP,HFP Supporting codec - SBC Accessory - S/M/L slicone Opne/Regular earpieces,USB charging cable