Smart Ring with Step & Sleep Tracker Compatible with Android & iOS - Three Sizes Available

• Made of high-strength aluminium alloy, this smart ring is durable and elegant in design ensuring long-lasting usage
• With its lightweight and ultra-thin body, this smart ring provides a comfortable wearing experience
• This intelligent ring offers various functions, monitoring your heart rate, body temperature, sleep patterns, and step count
• If there are negative emotions such as anxiety and sudden anger, as well as poor sleep quality
• The heartbeat often shows signs of acceleration or unstable heartbeat patterns in abnormal data analysis, emotional issues can be predicted as clues
• This smart ring serves as a meaningful gift for any occasion or holiday, such as birthdays, anniversaries, Thanksgiving, Christmas, Hanukkah, or Valentine's Day
• CPU: FR8016HA
• Bluetooth Version: BLE 5.0.
• Battery capacity: 28mAh
• Standby Time: About 45 days
• Working Time: About 3-5 days
• Charging time: 0.5H.G 
• G Sensor: msa310
• Heart Rate Sensor: HX3605
• Water-Resistant Level: IP68
• Charging Requirement: Charging 1A or less
• APP: JSRing
• System requirements: android5.0+ / ios10.0+
• Power Source: USB
• Material: Aluminium Alloy

Sizing Information (inner dia circumference):

• 17: 53.4mm
• 20: 62.8mm
• 22: 69mm

Note: Please measure and confirm the size according to the diagram before placing an order