Main Features:New heart rate monitor: adopted with HUAWEI TruSeen heart rate technology, the Honor 4 measure heart rate for all day, accurate and faster Sleep monitor: 8 sleep mode, 6 typical sleep problems identify automatically provide sleep improvement advices and personalized sleep services. Care about your sleep quality and adjust sleep habitsSedentary reminder: the smart bracelet will inspire you to move if you've been sitting too muchPedometer: keeps your steps and shows your daily calorie burnedMultiple sports management: displays the real-time status on screen, records more than 20 types of sports and tracks every aspect of your training like sports steps, distance, calories, etc.50M IP68 Waterproof: support swimming stroke recognition function. Can withstand temporary soaking like raining, bathing, hand washing, etc. Not support hot water showerNPC payment: support for Alipay, convenient payment for bus, subwayMessages notification: messages on your phone can be pushed to you