Feature:1. Multiple Health Monitoring: Monitoring your sleep, body temperature, and steps to observe your health anytime. Also suitable for sports tracking with a daily step count record.2. Sleep Detection: This smart ring can detect your sleep time, sleep status and sleep quality to help you improve your sleep, so you can always know your health condition.3. Sturdy and Elegant: Made of high grade aluminum alloy, sturdy and elegant, wearing this ring can highlight your fashion and outstanding temperament.4. Lightweight Design: With a design as light as only approximately 3g, this smart ring offers a bare to feel wearability that is so thin, you might even forget it's there.5. Perfect Meaningful Gift: This smart ring makes a purposeful present for all places like birthdays, anniversaries, Thanksgiving, Christmas, or Valentine's Day.Specification:Item Type: Smart Ring Material: Aluminum Alloy, Electronic ComponentsRing Battery Type: Lithium Battery (Shipped with Built in Battery)Ring Battery Capacity: 18mAh.Package List:1 x Ring1 x Charging Cable1 x User Manual