This practical ring showcases a combination of function and comfort in one with the ergonomic design. The quality ceramic not only results in a strong, tough and hard construction but also a more accurate sensitivity to the phone. On top of the screen unlock and safe return function, its medical emergency function offers better medical care with the support of the location and contact sharing.

• Material: zirconia ceramics (ZrO2).
• Ergonomic design with a gradually narrow band.
• Provide a strong, tough and hard construction for durable use.
• Minimize signal and antenna interference for accurate sensitivity.
• Outstandingly wear-resistant and chemical-resistant.
• NFC specification: ISO/IEC 14443-3.
• Work with all Android phones with NFC function.
• Frequency: 13.56MHz.
• Antenna working range: within 1 cm.
• Waterproof class: IP68 certified, submerged in 30 meters of water up to one hour.
• Dustproof class: IP68 certified, completely dustproof.
• Multiple functions: screen unlock, safe return, door access and medical emergency.