Smart watch L13 Bluetooth blood oxygen ECG

Screen size: 1.3 inches
Interface: USB 3.0
Body memory: 32M + 32M
Screen material: HD IPS
Wearing method: wristband
Operation mode: touch + button
Product size: 46 * 46 * 12.3mm
Screen resolution: 240 * 240 Wristband material
Strap style: sporty
color: black
Color: black, black leather, black steel, silver steel, red silver, brown silver