Xiaomi Smart Band 9 Pro 1.74 inch AMOLED Screen 5ATM Waterproof Smart Watch, Support Blood Oxygen / Heart Rate Monitor Color:Black With a frequency range of

With a frequency range of 20-20000

Bluetooth version: BT 5

Model: Shengmai X3

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dial automatic Definition

Xiaomi Smart Band 9 Pro 1.74 inch AMOLED Screen 5ATM Waterproof Smart Watch, Support Blood Oxygen / Heart Rate Monitor Color:Black With a frequency range ofFeature 1. 50 meters waterproof: waterproof level 5ATM (equivalent to 50 meters underwater). It can be worn in swimming pools, shallow water swimming and other shallow water activities, but it is not suitable for hot baths, saunas and deep diving. Water activities should avoid direct impact of high speed water flow: the waterproof function is not permanent and may weaken over time. 2. The peak brightness of the AMOLED display reaches 1200nits, and the