User friendly upgrade design

  • Built-in bluetooth chip is connected to portable bluetooth printer and can print out the original records and test results in the field.

  • Equipped with high-power loudspeaker, on-site voice count more clearly, can also be normally used in noisy environment.

  • Removable large capacity lithium battery, super long standby, easy to maintain.

  • Upgrade dust-proof structure, easier maintenance, longer service life and more stable rebound value.