$37.98
Replacement ear-clip HRV sensor for the Stone biofeedback device. 3.5mm connector, optical sensors on both sides of the clip for accurate heart-rate readings. Fits adults and children.
Description
Replacement ear-clip HRV sensor designed specifically for the Stone biofeedback device. Plug into the Stone USB unit and resume your training.
Specifications
- 3.5mm headphone-jack connector (standard)
- Optical sensors on both sides of the clip for redundant, more accurate readings
- Adjustable — fits adults and children (ages 5+)
- Compatible with all Stone Home and Stone Pro units
This is the sensor only. Requires a Stone USB device (sold separately) to function.

