MONTBLANC Smartwatch. The new Montblanc Summit 2 - a 42-mm smartwatch for men and women - marries fine watchmaking with the latest wearable technology. It offers cutting-edge features and exclusive apps that make it the ideal connected device for travel, sport, and adventure. OS: Wear Os by Google. Compatibility: iOS 9.3+ and Android 4.4+ (excluding Go edition). Power: 340 mAh - a full day, 4-5 days extra in time mode only. Memory: 1 GB. Storage: 8 GB. Sensors: heart rate, barometric altimeter, accelerometer, gyroscope, and ambient light. Connectivity: Bluetooth 4.2, Wi-Fi, GPS and NFC payment. Payment: Google Pay. In the box you will find the Summit 2, charging base, USB cable, safety manual, quick-start guide and warranty card. Stainless Steel, Calfskin