Cl. 3B and 4
Lasers for biomodulation (LLLT and HLLT) generally belong to class 3B (cw and pulsed/superpulsed) but can also be class 4 (with wide beam as the LightStream).
The Physiolaser and LaserPen belong to cl. 3B and the LightStream is available as class 3B with multiple laser heads (single and multi-cluster) and cl. 4 (15 W). The communication between control unit and laser works with bluetooth.