How to choose the best car battery scanner? auto batter tester

What're the key functions & features of KW210 battery tester :
1.System voltage: 12 Volts
2. Test Result: Good, Recharge or Replace
3.Capacity - Cold Cranking Amps (CCA), DIN, EN, and IEC information relative to battery rating.
4.Internal resistance value (mΩ)
5.Life in percentage (%)
6.Cranking system
7.Charging system
8.Record and re-play battery data, Life-time free update service
9.Battery test, cranking test, charging test, and other additional functions.
Konnwei smart vehicle diagnostics is setting new standards for automotive tools, and is sought by Professional Mechanics and Technicians around the Globe!
How to find the original factory?
Name: Sky Ren
Phone: [phone]
Whatsapp:: [phone]
WeChat : [phone]
Skype: konnwei03
Email: [e-mail]