ZGPAX S29 Smart Watch Phone Support SIM card, it's a mobile phone,can connect with Android phone. ZGPAX S29 GSM Smart Watch Phone with 1.54 inch Touch Screen Bluetooth Camera MP3 FM Main Features: Model Number: ZGPAX S29 Sim Card: Single Micro SIM Card single Standby Service Provide Unlocked Waist size: min 17.5cm, max 23cm Total strap length: 25cm Style: Watch style Shell Material: Silicon + plastic Resolution: 240 x 240 pixels Display Size: 1.54 Inch Bluetooth version: Bluetooth V3.0 Type: TFT, Resistive touch screen Note: This phone will only work with GSM networks: GSM 850/900/1800/1900MHz Unlocked for Worldwide use. Please ensure local area network is compatible. click here for Network Frequency of your country. Please check with your carrier/provider before purchasing this item.