Dual Purpose Mode: Scan and Wiremap Dual Purpose Test QC: Single-sided crystal head QC test Anti-interference scanning: Yes Wiremap: Pass, short circuit, open circuit, cross Port flashes: Flashing frequency approx. 3.5 seconds NCV: Yes Flashlight: LED lighting Adjustable sensitivity: Yes Headphone function: Yes Power supply mode: 3.7 V 1400 mAh polymer lithium battery Charging method: TYEP-C charging Physical dimensions: 60 x 135 x 28 mm (transmitter), 60 x 198 x 28 mm (receiver)