Huawei today announced the TalkBand B1, a smartphone accessory that doubles as a fitness tracker and a Bluetooth headset. The device has a 1.4-inch flexible OLED screen and relies on NFC and Bluetooth 4.0 Low Energy to connect to smart devices. It is compatible with Android 2.3 and up, and iOS 5.0 and up. It includes a removable earpiece that's good for up to seven hours of talk time. The TalkBand wirelessly tracks the wearer's activity time, such as steps taken, miles covered, and calories burned. It also records sleep duration and quality, and it has its own alarm. The TablkBand B1 has a 90mAh battery that lasts about six days for tracking activity and sleep. Huawei didn't say when the TablkBand B1 will be available, nor how much it will cost.