Product Details:

Display: LED Screen

Performance: FHR Value, Volume

Range&Accuracy: FHR Measurement Range: 50-210 bpm
Accuracy:±2bpm

Measuring Mode: Real-time

Ultrasound Frequency: 2.2MHz/3.3M Hz

Dimension: 240x160x115(mm)

Net Weight: 1.12kg

Volume: Adjustable
Battery Type: 14.4V N 1-MH(works more than 12 hours when fully charged)