Differences Between Mi Band-HRX Edition and Mi Band 2

The main difference between the Mi Band 2 and Mi Band–HRX Edition is that the latter does not have the heart rate monitor. Xiaomi says the omission of the feature has helped increase battery life on the fitness band.

Band	Mi Band HRX Edition	Mi Band 2
Battery	Battery capacity: 70mAh	Battery Capacity: 70mAh
	Standby time:23 days	Standby time: 20 days
	Battery type: Lithium polymer	Battery type: Lithium polymer
	Input current: 45 mA (typ) 65mA (max)	Input current:45 mA (typ) 65mA (max)
Weight	7.0g	7.0g
Water-resistance	IP67	IP67
Configuration	0.42" OLED display	0.42" OLED display
	Bluetooth 4.0 BLE	Bluetooth 4.2 BLE
	Power-efficient accelerometer	Power-efficient accelerometer Photoelectric heart rate sensor
Band	Total length: 235mm	Total length:235 mm
	Adjustable length: 155-210mm	Adjustable length:155-210 mm
	Material: Thermoplastic elastomer, aluminum alloy	Material:Thermoplastic elastomer, aluminum alloy
Compatibility	Devices with Android 4.4, iOS 7.0 or above withBluetooth:registered: 4.2 support	Devices with Android 4.4, iOS 7.0 or above with Bluetooth® 4.0 support
Compatible phones	Devices with Android 4.4 and above, such as Mi 3, Mi4, Mi 4i, Mi 5, Mi Max, Redmi Note 4G, Redmi Note Prime, Redmi 1S, Redmi 2,Redmi 2 Prime, Redmi Note 3, Redmi 3S, Redmi 3S Prime, Redmi 3S+  Devices with iOS 7.0 and above, such as iPhone models 4s and later.	Devices with Android 4.4 and above, such as Mi 3, Mi 4, Mi 4i, Mi 5, Mi Max, Redmi Note 4G, Redmi Note Prime, Redmi 1S, Redmi 2, Redmi 2 Prime, Redmi Note 3, Redmi 3S, Redmi 3S Prime, Redmi 3S+  Devices with iOS 7.0 and above, such as iPhone models 4s and later.
Note	Mi Band's phone unlocking feature requires smartphones with MIUIor Android 5.0 and above.	Mi Band's phone unlocking feature requires smartphones with MIUI or Android 5.0 and above.
In the box	Mi Band sensor, band, charger, user guide,warranty card	Mi Band sensor, band, charger, user guide, warranty card
Price	Rs ₹1299/-	Rs ₹1999/-