X4 Waterproof Medical Intelligent Sports Health Titanium Alloy Ring

Product information:
Material: Aviation grade titanium alloy
Specification: 7.9 * 2.8mm
Weight: about 4.5g
Battery life: 5-7 days
Available colors: silver/black/gold/Rose Gold
Optional size: 6#7# 8# 9# 10# 11# 12# 13#
Waterproof grade: IP68
Certificate: CE/FCC/battery report/ROHS/RED
Applicable people: fashionable people who pursue new technology products; People who pay attention to health management; Regular exercise