These specifications are taken from the printed Instructions for Use supplied with the device (Baby FM v1.0 EN 07/26).

• Type: BFM-01
• Device type: Bluetooth continuous body-temperature monitor (thermometer)
• Measurement method: Axillary (underarm), continuous skin contact
• Measurement mode: Direct mode only — the displayed reading is the actual measured value at the measurement site, with no automatic adjustment or correction applied
• Measurement range: 34.0 – 42.0 °C
• Resolution: 0.01 °C
• Measurement accuracy: Laboratory: ± 0.1 °C
• Memory: 48 hours internal buffer
• Operating conditions: 10 – 40 °C, 10 – 95 % relative humidity
• Storage conditions: up to +50 °C, 10 – 95 % relative humidity
• Automatic switch-off: The device turns off when the battery is removed
• Communication: Bluetooth 4.0; 5 m valid transmission distance in free space. The range actually achieved in a household depends on the environment and on your phone.
• Compatibility: iOS 8.0 or newer; Android 5.0 or newer
• Battery: 1 × CR2032 3 V coin cell (non-rechargeable)
• Battery lifetime: at least 30 days of measuring with a new battery
• Dimensions: 126 × 30 × 14 mm
• Weight: 20 g with battery, 18 g without
• IP class: IP22
• Expected service life: 5 years

Reference to standards: EN ISO 80601-2-56:2017; EN 60601-1:2006+A1:2013; EN 60601-1-2:2015; EN 60601-1-11:2015/A1:2021.