Item Type: Blood Pressure Material: ABS Size: Fetal Doppler Commodity Quality Certification: CE Application: Wrist Brand Name: NURSAL Model Number: TD2037 Ultrasonic frequency: 2.125MHZ-2.875MHZ Integrated sensitivity: > 90dB HR range: 50 / min ~ 210 / min Display resolution: 1bpm FHR detection range: -2 / min ~ +2 / min Screen: LCD Display Probe : Waterproof Display size: TFT 1.3 inch FHR detection: Support Color : White