Works with Samsung, HTC, Sony, Nexus, LG, & More. Must have Watch! Sync's with your android smartphone. Has all the capabilities of a traditional watch but with so many more options. See who's calling by just looking at your watch. Answer calls and dial calls from your watch. Has a ring reminder when your phone has any messages. The list goes on. This is one of the hottest products of the year. Specifications: Material: Steel + SiliconBluetooth Version: Bluetooth V3.0+EDRBluetooth Protocol: A2DP + HFP 1.5 + HS P 1.2Range of Frequency: 2.4GHz spectrumAmbient Noise: ≤75dBTransmitting Range: ≥10mLanguage Support:New version: English, French, Spanish, Portuguese, Korean, Italian, German, Indonesian, Finnish, Thai,Turkish, Russian, Arabic, SwedishCharging Time: about 1 hourTalk Time: about 3 hoursMusic Play Time: about 6 hoursStandby Time: about 160 hoursPower Supply: Built-in 230mAh rechargeable battery