Drive: 40 mmImpedance: 32 OHMBluetooth version: Bluetooth v4.0 + EDRPower Level: CLASS IIOutput Power: 30mWBluetooth distance: 10 meters barrierFrequency response: 20-20000 HzOperating voltage range: 3.0V-4.2VMicrophone sensitivity: -42dBwith A2DP / AVRCP high-quality stereo audio transmission and remote control protocolPowerful noise noise cancellation circuit (Active Noise Reduction)Wired and Bluetooth automatically switch to support audio inputCharging time is about 1 hour (power indicator Charging: blue light lights， fully charged: blue light goes out)Dimensions: As picture shownTalk time About 4 hoursMusic for about 3 hoursThe standby time is about 3-4 daysCharging Power: DC5V Power Interface [the hole] (computer USB port， mobile phone charger， car charger)Compatible: Compatible with Android， Apple， Microsoft， Symbian 99% of with Bluetooth cell phones(IOS cell phone has power display)Color: Black，Pink，White， Blue，Beige. How to Use:1. Put the bluetooth on your ear first2. Press the main button for 5 Seconds then the bluetooth would make a sound that it has opened and power on，Then you could release the button.3. Please connect your phone with the bluetooth named S530 and try to connect it4 when it has connected the bluetooth would has a sound "connected"Then you can enjoy yourself with it now!Note:the picture shown is a representation of the item，you'll receive from the available lot. Picture may appear larger on your screen. Color may vary slightly due to the color setting of each individual monitor. Package included: 1 x Bluetooth Earphone1 x USB cable1 x Use Manual