Huawei has officially announced its first wearable device, the TalkBand B1, at Mobile World Congress in Barcelona. It was previously leaked few days ago. The TalkBand B1 features a 1.4-inch dust and water resistant flexible OLED display. It is a fitness tracker device with an added Bluetooth 4.1 support for wireless communications. The TalkBand B1 works as Bluetooth headset and fitness tracker. For connectivity, it supports Bluetooth 4.1 and NFC technology. The TalkBand B1 is compatible with any smartphones running Android 2.3 (or higher) and iOS 5.0 (or higher). In addition to tracking your fitness, it also monitors users’ sleep duration and quality. The TalkBand B1 will go on sale in Europe by the end of March 2014 and the prices start from €99. Stay tuned for more updates.