Use this page as a quick reference for Xiaomi Mi Smart Band 4 specifications, water-use limits, wearing guidance, and basic safety notes.
[reference] Title: Model Text: XMSH07HM Title: Battery Text: 135 mAh lithium polymer battery Title: Water Resistance Text: 5 ATM Title: Wireless Connection Text: Bluetooth 5.0 BLE [/reference]Safe Daily Use
[dosdonts] Do: Keep your wrist still while the band measures heart rate. Do: Keep the skin-contact area dry during normal daily use. Do: Clean the wristband regularly with water. Do: Wipe excess water from the band with a soft cloth before using the controls again. Dont: Wear the band excessively tight around your wrist. Dont: Use the band in a sauna or while scuba diving. [/dosdonts] [warning] Stop wearing the band and seek medical assistance if the skin-contact area develops redness or swelling. [/warning]Water Use
The Mi Smart Band 4 has a 5 ATM water-resistance rating. It can be worn in the shower, in a swimming pool, or while swimming near the shore.
[note] The touch button and touchscreen are not available for normal operation underwater. After contact with water, wipe excess moisture from the surface with a soft cloth before using the controls. [/note]Device and Wristband
- Name: Mi Smart Band 4
- Model: XMSH07HM
- Tracker unit net weight: 10.6 g
- Tracker unit dimensions: 46.8 x 17.8 x 12.6 mm
- Wristband material: Thermoplastic elastomer (TPE)
- Clasp material: Aluminum alloy
- Adjustable length: 155–216 mm
Battery and Power
- Battery capacity: 135 mAh
- Battery type: Lithium polymer battery
- Input voltage: DC 5.0 V
- Input current: 250 mA max.
Connectivity and Compatibility
- Wireless connectivity: Bluetooth 5.0 BLE
- Compatible with: Android 4.4 or later and iOS 9.0 or later
- Frequency: 2402–2480 MHz
- Maximum output: 0 dBm
Operating Limits
- Water resistance: 5 ATM
- Operating temperature: -10°C to 50°C