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product specifications: ​ sim card frequency: gsm 850/900/1800/1900 mhz network & connectivity:only 2g network * surface treatment technology: stainless steel wire drawing primary color * cpu: mtk6261d * weight: 1.76oz / 50g * dimensions: (9.65 x 1.57 x 0.49)" / (24.5 x 4 x 1.25) cm * lcd: 1.3′′ inch tft high definition lcd * resolution: 240 x 240 pixel * frequency: 360mhz * screen: ogs capacitive touch screen * bluetooth: ver 3.0 * battery of smartwatch: 350mah polymer battery ...