【Up to 30 Hours of Talk Time】 If you need to be available at all times and you work for most of your working day, the DY25 Bluetooth headset offering 30 hours of talk time from a single charge, all day stay connected. Fully meets your needs and keeps you connected throughout the day..【80% NOISE CANCELLATION】 With 2 outstanding noise-cancelling microphones, the DY25 wireless Bluetooth headset filters out 80% of background noise and provide you the crystal clear sound performance. This gives you exceptional sound quality. Bluetooth Headset for cell phones Block out noise, engineered for calls on the go, and your communication no longer has to worry about background noise..【Announce Caller ID】 Download the APP(named "RealTTS") from your app store and make sure you cell phone bluetooth connected with "DY25" and "DY25 RealTTS" at the same time, you can realize the name transfer function. From now on with the bluetooth with caller ID announcement function, you don't have to worry about not knowing who the caller is when you don't have time to look at the phone. (Only support IOS system).【Redial Last Outgoing Call & Mute Button】 Redial Last Outgoing Call feature allows you to easily and quickly make calls to callers who did not have time to speak successfully. Help you handle your business efficiently. DY25 bluetooth earpiece with mute button, allowing you to control whether the receiver can hear your voice at any time and enjoy the freedom of conversation..【Enhanced Durable & Comfort Fit】 With IP5-reted protection against dust and water, your Bluetooth DY25 headset us durable enough to go where you go. Because when you're always on the go, you need a reliable hands free bluetooth headset for your PC or laptop. Only 12g, DY25 earpiece is so small and light that you could almost forget you're wearing it. Very comfort to fit.