Xiaomi Mi Band 4 review

Hello fellas, I bought almost 5 months ago and used Xiaomi Mi Band 4 wristband to review and talk about my experiences. Before I bought Mi Band 1S and I use for a while, but missing screen reason I left use.(?) First of all I bought Mi Band 4 because has colorful screen second reason long battery life.
















Xiaomi Mi Band 4 technical specification;
Screen: 0.95 in 120x240 piksel 24Bit RGB AMOLED
Capacitive touch screen, 400 nits brightness (5 level settings)
2.5D durable glass, finger print protection
Connection: BT5.0 BLE (2402-2480 MHz)
Sensors:  3 axis accelerator, 3 axis gyroscope,
PPG heart rate sensor, capacitive proximity sensor
Durability: 2.5D durable glass, 5 ATM water protective
Extra: Capacitive key on the front surface (Back/Main Screen), Vibration
RAM/ROM: 512KB/16MB
Battery: 135mAh Li-Po (20 days usage)
2 hours charging (5V/0.25A Max.)
Body: Plastic/Polyurethane TPE
Bangle body size: 46.8x17.8x12.6 mm
Bracelet strap size: 18x155-216 mm
Weight: 10.6 gram (Kayışla 22.1 gram)


Xiaomi Mi Band 4 is bigger than when I used Mi Bans 1S and has big picture on the box. Already the box had hanger. Box design is ready for use of put on the rayon. Box inside has wristband, black strap, charge stand and manual. I paid $40(I bought it for $40).

First time I saw the Mi Band 4, it's looked me very thick. Thicker than Mi Band 1S, more difficult to put on and take off the strap. Body of wristband has a recess. Strap connects to body with gear structure. Strap buckle is same old generations. Aluminum buckle this time is same black color as the  wristband. I think charge stand worse than old generations and delicate old generations. I think better old sliding structure. USB of charging device very thin and flimsy