Style is nothing without comfort. The smooth ergonomic design of the HUAWEI Band 2 Pro merges seamlessly with your wrist empowering you to take on any challenge in style. Look great, feel great, do great things.The HUAWEI Band 2 Pro has a long battery life, with a single charge lasting for 21 days of normal usage. It can withstand water pressure of 5 ATM and supports all day wear, including rain, shower & swim.HUAWEI Band 2 Pro doesn't just provide comprehensive and accurate workout data records (heartbeat, pace, movement distance, calories, speed, and direction) but integrates a professional motion analysis algorithm to help users exercise in a thoroughly scientific way. Professional workout report includes: Distance, Heart rate, Calorie, Pace, VO2 max, training effect, and recovery time advice.The HUAWEI Band 2 Pro also provides scientific sleep tracking and breathing instruction.