The 13 Main Features of k22: 1. 1.3inch Full-touchScreen + Convenient Button Operation + Sports Wear-resistant Shell 2. 22mm Detachable Strap, Suitable for all 22mm Universal Watch Band 3. App QR Code on the watch, Easily to download the App 4. 400mAh Big Battey, Standby Time for more than 30 days 5. Custom Watch Dials, Design Your Own Fashion 6. 7x24h / Automatic Heart Rate Monitor 7. Blood Pressure Oxygen Monitor 8. Real-time Weather Display 9. Convenient Music Control 10. Fun YOUNG BIRD GAME 11. GPS Run Route Track 12. Theater Mode 13. bluetooth Call Language: English,Chinese,Japanese,GerAdult,French,Spanish,Ukrainian,Russian,Portuguese Compatibility: for oneplus one plus nord 2 smart phone record your every steps 1.28 inch IPS screen high resolution display 240x240 px 1.Bluetooth calling/BT music(Superior clear audio like sound effect),Weather 2.Heart rate detection/Blood pressure detection/Blood oxygen detection/Wole-day heart rate monitor Timer ,Pedometer,Calorie Consumption,Distance Calculation,Heart rate,Blood pressure,Blood oxygen,Sleep time /quality,On Off dispaly,Multiple sport modes 3.Sleep detection (Sleep time ,Sleep quality) 4.Calls to remind,SMS Reminder,Third-party messaging reminder Multilingual push,Clock alarm,Remote Camera,Sedentary reminder 5.Female physiological period reminder 6.Support multi-languauge:English,Chinese,Japanese,GerAdult,French,Spanish,Arabic,Russian,Ukrainian,Russian,Portuguese 7.400mAh big battery,super long standby time,Bright screen under sunshine 8.Synchronous data to APK/APP Rugged sporting design Big side buttons with corrugated shape to avoid wrist press 400mAh big battery Big battery capacity with 30 days super long standby time, more powerful Fashion design with exquisite technology Dual bluetooth module BT5.0 calling, convenient to pick up incoming calls and make calling via watch Whole day heart rate detection