mini certificated bluetooth earphoneKS082:The Highest Standard Parameters:Bluetooth 4.1 achieves the goal of energy conservation.The Highest Standard Parameters:Bluetooth 4.1 achieves the goal of energy conservation. Sweat-proof,Website:://.s-ksenic.com, durable design, On screen Battery, Meter: Up to 10 hours of Talk/Playing Time and 330 hours Standby Time.Pure Sound In-ear white noise and listener fatigue reduction. Eliminates the white noise and delivers a clean audio experience offering hours of pure enjoyment.Stable and strong signal: Bluetooth 4.1 technology,the signal strength is nearly twice times than the general bluetooth headset in the market.the signal is stable no matter you turn left/right or other directions of the body.High Compatibility and English Prompt Voice: Compatible with Bluetooth enabled music players