Sonoline B Fetal Doppler® {Pocket, Handheld, & Portable}
SD1 Ultrasonic Pocket Doppler with Bluetooth - EdanUSA
Pocket Doppler - MedGyn Ultrasonic Pocket Doppler
WonderBee™ Pocket Fetal Doppler – Petite Island
Pocket Fetal Doppler™ Check Your Baby's Heart Rate – Hugmoms
MedGyn Pocket Doppler with 2MHz Probe or w/3MHz probe, rechargeable, built-in recorder, accurate FHR detection, LCD display - Compression Medical Distributors, Inc.