Outer Materials: Ceramic
Inner Materials: Non-allergenic resin (ISO 10993.5 and 10993.10) with platinum electrical pads
Available Sizes: 6-12 (whole sizes only)
Charging Time (empty to full): ~1 hour
Battery: 13-16 mAh Lithium Ion battery, non-replaceable
Battery Life: ~3 days
Charging: Wireless w/ Happy Ring charger
Privacy: Data encryption, secure pairing of the ring and the app
Water Resistance: IP67
Durability: Endures drop of 1m/3.3ft or equivalent impact
Operating Temperature: -10C - 54C / 14F - 129F
Charging Temperature: 0C - 54C / 32F - 129F
Charger Input Connector and Voltage: USB Type-C connector. USB nominal 5V