Xiaomi Mi Band 4

The Mi Band 4 has a 0.95-inches AMOLED display. The fitness band weighs 22 grams and is lightweight. The band features a 135mAh battery which offers up to 20 days of battery life. Thus, you can use the fitness band for an extended period without charging it frequently. The smartphone features of the band include a stopwatch, timer and alarm clock. You also receive incoming calls and text message notifications on the band. Moreover, this fitness band also gets a heart rate monitor, calorie and step count, and sleep monitor. Thus, you can keep your health and fitness in check. 

The fitness band also features IP65 certification for water resistance. Meanwhile, you also get scratch resistance on the band. However, the fitness band misses the dustproof feature. The fitness band offers NFC and Bluetooth 5.0 for connectivity. However, there is no in-built GPS support on the fitness band. Therefore, you will miss out on an essential feature.  However, the fitness band is a bit expensive. Meanwhile, you get a lot of features on this fitness band. 

Pros

• IP65 Water Resistance Certification
• Bluetooth 5.0 and NFC support
• Heart Rate Monitor

Cons

• A bit expensive
• Missing in-built GPS support