Smart Ring Health Monitoring

black,56.9mm black,59.5mm black,62.1mm black,64.6mm black,67.5mm silver,56.9mm silver,59.5mm silver,62.1mm silver,64.6mm silver,67.5mm gold,56.9mm gold,59.5mm gold,62.1mm gold,64.6mm gold,67.5mm rose gold,56.9mm rose gold,59.5mm rose gold,62.1mm rose gold,64.6mm rose gold,67.5mm