Amazon.com: Livenpace Pocket HR Monitoring Device with Screen, Bluetooth Monitor for Rhythm Waveform, APP Compatible with iOS/Android, HHM3 : Health & Household
Wisecoco 6 Inch 2K Pocket Monitor 2560x1440 Raspberry Pi Monitor Built-in battery LCD Monitor Plug and Play Monitor
Starmedical|Pocket Monitor
UCSD researchers created a pocket-size blood pressure monitor that attaches to a smartphone - The San Diego Union-Tribune