T99 2.02 inch Square Screen 2 in 1 Bluetooth Earphone IP67 Waterproof Smart Watch, Supports Blood Oxygen Monitoring 1. Screen size: 2.02 inches 2. Resolution: 320x385 3. Watch battery: 3.8V300mAh 4. Headphone battery: 3.7V25mAh 5. Watch chip: Zhongke 5th generation AB5691G 6. Heart rate and blood pressure chip: HX3917 7. Pedometer: 8C7A20H 8. Storage: 128MB 9. Bluetooth version: 5.4 10. Charger port: Micro USB 11. Charging time: Approximately 3.5 hours 12. Talk time: 3 hours 13. Use time: 5-7 days 14. Standby time: 15-20 days 15. Supports English, German, French, Italian, Spanish, Czech, Dutch, Swedish, Greek, Polish, Hungarian, Danish, Korean, Japanese, Arabic, and Portuguese. Default language: English 16. The smartwatch features 247 accurate heart rate monitoring, blood pressure monitoring, blood oxygen monitoring, activity monitoring, mileage, calorie consumption, message notifications, sleep history, message reminders, remote photo taking, and a vast selection of free watch faces for download and DIY watch face creation. 17. Earphones charge and fit easily in the watch compartment, allowing for easy access. 18. Short handle design with two-way noise cancellation for clearer calls.