Cool 21 mm smart ring - Silver (Black)

We present to you this COOL Health Smart Ring, made of ultra-resistant pure steel. Finished in black, with silver sides. Elegance made technology. Get the latest technological advance in the Wearables range. It performs the measurement functions of a smartwatch, but with the comfort of an ergonomic ring, almost negligible. Includes magnetic charger base box. It can also be charged with the included magnetic USB cable. Features: - Measurement of steps, distance traveled, calories consumed. - Heart rate measurement (24/7). - Sleep measurement (24/7) - Blood oxygen measurement (24/7). - Ability to set daily goals (steps, distance, calories...) - Multiple sport modes: specific games and sports to burn calories. - Water resistant (submersible). Specifications: - iOS/Android compatibility - Bluetooth Version: 5.3 - Multiple sport modes: games and kinesthetic sports to burn calories. - Water resistant: 5ATM (submersible up to 50 meters). - APP: CyFit - Ring Battery Life: 20 mAh (4-5 days) + 8 extra charges with Powerbank. - Ring Dimensions: 7 mm (width) x 2.3 mm (thickness) x 21 mm (diameter). - Powerbank Charging Base: 300 mAh (Approx. 8 extra charges). Measurements: 40mm x 40mm x 20mm - Measurements (sleep, blood oxygen and heart rate): monitoring 24 hours a day. - Compatible with Apple Health. Box contents: - COOL Health Smart Ring (Diameter 21mm) - USB charging cable: magnetic. - Charger base box (powerbank) - Multi-language manual (Spanish, Portuguese and English)