OnceAll AK812 AOKE Newest Model-SOS Emergency Call 1.44" Touch Screen with Bluetooth MP3/MP4 Watch Phone White The unique Watch Phone with call mute ,SMS mute, eBook Function! Suppory MP3 and MP4,midi,together witth the Bluetooth stereo headphones to listen to music. GSM900/1800/1900MHz,Supported Support TF card memory extension. You can switching ON/Off definition screen By youself. With one SIM card,You can make phone call so easily.