Made in Swiss
One of accuracy 2 workable with mobile phone (Apple & Android) for mechanical watch to test ac- curacy, beat error and amplitude. Aluminium unibody with 2 year warranty.
No jack connector needed(16 bits/48KHz digital audio used).
Plug & play & no power supply required.
Weight: 20g
Dimension: 40(L)x40(W)x7.5(H)mm