Oura Ring 4 - 8 - smart ring - Bluetooth LE - silver

General

Features

Sleep Score, sleep recommendations, auto-activity detection, Daily Readiness Score, fitness age, VO2 max, Find my Device, inactivity alert

Product Type

Smart ring

Colour

Silver

Modes

Airplane mode

Sensors

Temperature, heart rate, PPG sensor, accelerometer

Supported Host Device OS

iOS, Android

Tracking Data

Sleep stages, blood oxygen saturation, heart rate, heart rate variability, Resting Heart Rate (RHR), skin temperature, stress level, stress management score, menstrual cycle, female health management, respiratory rate, active time, sleep activity, activity

Ring Size

8

Wearing Style

Ring

Set Goals

Yes

Miscellaneous

Compliant Standards

FCC, BPA-free

Included Accessories

Charging cradle, USB-C cable

Body Material

Titanium, PVD coating

Warranty

1-year warranty

Protection

Water-resistant, shock-resistant

Specific Absorption Rate (SAR)

0.0003 W/kg (limb)

Environmental Parameters

Min Operating Temperature

-10 °C

Max Operating Temperature

54 °C

Max Depth of Water Resistance

100 m

Battery

Technology

Lithium polymer

Recharge Time

80 min

Rechargeable Battery

Yes

Run Time (Up To)

8 day(s)

Wireless Charging

Yes

Connectivity

Wireless Interface

Bluetooth LE

Dimensions & Weight

Width

7.9 mm

Depth

2.88 mm

Height

7.9 mm