Xiaomi Smart Band 9 Pro Obsidian Black. Upgraded all-round sleep monitoring with a linear motor for better haptic feedback. Features a 1.74" narrow-edge quadrilateral display with 2.5D cover glass, offering up to 21 days of battery life and 1200 nits HBM brightness. Enjoy a 60Hz high refresh rate and automatic brightness adjustment. The 2.5D cover glass provides an unmatched tactile experience with a rich assortment of new watch faces. Additional functionalities are available. Available with a leather strap or a masterfully crafted magnetic strap. The TPU strap is your ultimate workout partner, being soft, comfortable, skin-friendly, and resistant to sweat and weather. Experience comprehensive upgrades with an upgraded AFE chip for more accurate heart rate and blood oxygen level measurements. It boasts 5ATM water resistance, supporting a wide range of water sports and recognition of swimming posture. The new linear motor delivers comfortable vibrations with a range of crisper, subtler, and more comfortable vibration modes.