This TAG Heuer Connected Calibre E4 Smartwatch is a new generation of the brands Connected watches, designed to deliver connected elegance and a sports smartwatch. Having already established themselves as leaders in the world of smart watches, the launch of this smaller 42mm case has created a more slimline appearance making it appeal to all, whether you’re at the office, celebrating an occasion or playing sports. At A Glance  Presented on a black rubber strap with steel folding clasp with double safety push buttons Interchangeable straps available separately 42mm stainless steel case with a water resistance of 50m Silver steel crown at 3 o’clock Steel shaped push button at 2 o’clock Steel shaped push button at 4 o’clock Domed sapphire crystal Watch Experience with TAG Heuer custom built app offers watch faces, Sports watch app for swimming, running, cycling, fitness and golf, Wellness app Sensors: heart rate, compass, accelerometer, gyroscope, NFC, microphone, Barometer Charging time: 100% in 1h30 at temperatures between 15° and 45°C Battery life: 1 Full Day (1h Running, including Wellness)