Model Number: F5. Brand: Other. RAM Size: 64 MB. With Camera: No. SIM card support: No Operating System: Other. Compatible Operating Systems: Android & iOS. F5 smart watch has built-in GPS module, it can independently record GPS Heart Rate Monitor which measures your heart rate, monitor your health condition Real-time Temperature and Altitude Measure: special for outdoor sports, so that you can respond to sudden weather changes. Multiple Sports Modes Record walking, running, climbing, swimming and cycling. Specifications: Model: F5 Bluetooth Version: Bluetooth 4.0 Built-in chip type: NRF52832 IP rating: IP67 RAM: 64K ROM: 512K Waterproof: Yes. Alert type: Vibration Bluetooth calling: Caller ID display, Caller's name display, Phone call reminder Find phone: No Groups of alarm: 1 Health tracker: Heart rate monitor, Sedentary reminder, Sleep monitor Messaging: Message reminder Notification: Yes Other Function: Alarm, Altimeter, Brightness Adjusting, GPS, Thermometer Notification type: Facebook, Twitter, WeChat, WhatsApp Compatibility: Android 4.4 / iOS 9.0 and Above Systems Battery Capacity: 350mAh Charging Time: About 2hours Standby time: About 3 weeks Package Includes: 1x F5 Smart Watch 1x Charging Cable 1x User Manual.