K21 Color Screen Spo2 And Body Temperature Monitoring Smart Bracelet $ 20.04 Product Information: Screen size: 1.3 inches Interface: USB 2.0 Body memory: 64+512KB Screen material: alloy Wearing style: wrist strap Compatible system: fully compatible Wireless distance: 5m (inclusive) -10m (inclusive) Battery capacity: 230MAH Operation mode: touch + button Product size: 454510.8 Wristband material: silicone Strap size: L (suitable for 160-180 mm wrist circumference) Color: pink, black, gray
