The Joyroom JR-FT4 smart watch has many features, including fitness tracking, automatic monitoring of heart rate, blood pressure, oxygen in the blood, stress, and sleep quality. 

• Product type: smart watch (make / answer the call).
• Brand:  JOYROOM
• Model: JR-FT4
• black color.
• Jerome watch size: 45 * 38 * 11.8mm.
• Bluetooth version: BLE5.3 + BT3.0
• Charging method: wireless charger.
• Watches against water. Water resistance level: IP68
• Screen size: 1.9 inch IPS color touch screen
• Jayroom Clock Resolution: 320 * 380
• Battery capacity: 300 mAh.
• Joyroom Clock Output: 5V.
• Waterproof smart watch Charging time: 2 hours.
• Use time: 7-10 days.
• Net weight: 48 ± 2 (g