These Koss BT190i Wireless Bluetooth FitBuds are designed with sweat resistant technology and unique in-ear clips ensuring that your music moves with you even during the most rigorous of exercise.Intuitive, on-board controls allow listeners to quickly navigate through songs, play or pause music, volume-up and volume-down; listeners can also stay connected using the in-line microphone to easily answer incoming calls.With its built-in rechargeable lithium-ion battery, it delivers up to 6 hours of play time (at moderate levels) and 80 hours of standby time on a single charge.The soft silicone in-ear cushions seal comfortably around inside the ear to block outside noise and keep music from leaking out.Features:- Wireless Bluetooth FitBuds- Bluetooth 4.0 Technology- Built-in rechargeable lithium-ion battery- Sweat Resistant- Up to 6 hours of playtime (at moderate volume) on one charge- Up to 80 hours of standby time on one charge- Soft in-ear clips for a secure fit- Three sizes of cushions (Small, Medium, & Large)- USB cable- 1 Year Warranty