✅ Simple operation, electronic real voice to indicate oxygen and pulse rate values
✅ 4 directions display, Low power indicator, Automatic power off function
✅ Small, Comfortable finger stall, durable battery cover. Free lanyard, batteries and carrying case
✅ Eyecare product, convenient for people who have vision problem.
Sold on Amazon.com — Average Customer Rating: 4.1 out of 5 stars