Probe: 8MHz
Battery: 7.4V 1500mAh DC
Speaker: 4 ohm 1W lithium battery
Earphone: dual channel 270 3.5mm
Product size
Host: 192mm (L) x 84mm (W) x 30mm (H)
Probe: 20mm (DIAM) * 120mm (L)
Weight: about 300 grams (including battery and probe).
Outer packing: 37cm (L) x 31cm (W) x 14cm (H)