Product Information:
Mode: number, prompt tone
Measuring range: 50-230bpm
Measurement error: ± 2bpm
Probe frequency: 2.0MHz
Service life: 5 years
Product weight: 180g (without battery)
Dimensions: 14x10.5X3cm

Packing List :

Fetal Heart Rate Tester *1
Battery *1
Packing box*1
Charging cable*1
Manual *1