Chipset: jl7012 ii compatible system: android 5.0 or above and ios 9.0 or above flash memory: 128mb screen size: 1.43" resolution: amoled 466×466 sensor: tyhx3605 (heart rate, blood oxygen ic) / sc7a20 (g-sensor) battery type:lithium polymer battery battery capacity:3.7v/260mah charging method: wireless charger amoled display silicone strap + metal strap heart rate and blood oxygen monitoring the porodo raytona smart watch, available with both silicone and metal straps, has a 1.43" amoled display with a sharp 466×466 resolution. it includes advanced sensors for heart rate and blood oxygen monitoring. with 128mb of flash memory and a 260mah battery, it supports wireless charging and gives you compatibility with android 5.0+ and ios 9.0+ devices. raytona smartwatch is a magnificent and stylish accessory to have for your daily lifestyle.