Aichiken
Smart Health Rings for Women Men, Fitness Tracker with Heart Rate, Blood Oxygen, HRV, Sleep Tracker, Step Tracker, No Subscription Fee, IP68
【Intelligent Sleep Tracker】: Your favorite sleep tracker is now wrapped around your finger. this health rings for men women can also automatically monitor your sleep. Monitor your falling asleep, waking up time, sleep quality (deep sleep and light sleep) through graphs. You can view daily, weekl...
$65.99