Product information:

Product model: AK53
Waterproof IP67 waterproof
Main Board Specifications Comments
Product Appearance and Material Smart Bracelet/main metal, TPU watchband
Main chip model Realtek 8763EWE
Comments
Body storage capacity (ROM+RAM) 32MB FLASH+160KB RAM, external expansion 128MB FLASH
Maximum external storage capacity 128MB
Display screen comments
Display screen type IPS
Screen resolution 360 * 360
Screen size 1.32 inches Colorful LCD
Touch screen full touch
Antenna Comments
Bluetooth antenna YES
Comments on sensors and models (model no.)
Acceleration sensor Shilan Micro SC7A20
Bluetooth Comments
Bluetooth version BT5.1
Battery type polymer
Battery capacity 210mAh
Health Comments (model NO.)
Heart rate Tianyi Hexin 3600+dynamic heart rate
Blood pressure YES, by software
Blood oxygen N/A
Features+Application Software Comments
Compatible software support IOS 9.0+and Android 4.4+