• Ultra-low Temperature Operation: Tough enough to be operated even in extreme temperatures as low as -40°C
• Built-in 30 Sports Modes: Whatever activity gets you going, you'll likely find a mode for it on S2
• Make Calls on Your Wrist: Whether you are running, riding. working, or doing farm work, you can quickly answer the phone with one click. Don't miss every important piece of information
• 60 Days Battery Life: Endure any adventure up to 60 days at a time, the S2 is your best partner for breaking through yourself
• 1.83-inch Display: Make it easier to see the data that's vital to your adventure. 240*284 Resolution. 331 PPI Screen Pixel Density

Specifications:

• Main control: RTL8763EWE
• Memory: RAM256KB+ROM192KB, external 128Mb FLASH
• Screen display: LCD 1.83" IPS screen 
• Resolution: 240*284
• Display brightness (assembly brightness): over 400 lumens
• Touch screen: G+F process
• Material: Zinc alloy case + PC case back + TPU strap
• Bluetooth version: Bluetooth 5.0
• Battery capacity: Li-polymer battery 450 mAh
• Standby time: 60 days
• Working time: about 15 days
• Charging time: 2.5H
• Heart rate sensor: HX3605
• Motor: Built-in
• Charging cable: Magnetic cable charging with SMD protection IC
• Speaker: 1508 (waterproof speaker)
• Microphone: TMG4015FS-W38(waterproof microphone)
• Waterproof rating: IP67
• Charger: Charging 1A or less