
Don't expect anything too high tech. This is a very simple device that takes some getting used to. Once you get comfortable with it and understand how far you need to keep it from the speaker, it will do the job. This unit does not come with a CD, so you'll need to go online and download the audio tracks to do the actual polarity test (which can be a bit tricky to find). Also, the green light for positivity is very dim and you need to work in a darker place or cover it with your hand to see it.

Autoscanner for car diagnostics Rokodil ScanX Pro, OBD2 scanner
29 Review

Vgate ICar Pro Bluetooth 3.0 OBD2 Code Reader OBDII Scanner Scan Tool Car Fault Diagnostic Check Engine Light For Torque Android
22 Review

MUCAR CDL20 OBD2 Scanner - Check Engine Code Reader And Diagnostic Scan Tool For All OBD II Protocol Cars Since 1996, With O2 Sensor, EVAP System, And Smog Test Functions
23 Review

Precision Bike Torque Wrench Set for Mountain & Road Bikes - Pro Bike Tool 1/4-Inch Drive with Allen & Torx Sockets, Extension Bar, Dual Readout, and Storage Box
11 Review

Cordiant Winter Drive 2 255/55 R18 109T
33 Review

Xiaomi Mi x Mijia Wiha Precision Screwdriver Set (DZN4000CN), 25 pcs
34 Review

DVR 70MAI Dash Cam Pro Plus+, black (A500S), black
87 Review

Xiaomi Mijia Ratchet Screwdriver 16 in 1 Screwdriver with Interchangeable Bits, 10 pcs, Black
22 Review