Dmtrab For Mechanic Iboot Mini Power Supply Cable Test Cable For Android1. Battery-free boot2. Buzzer over-voltage and over-current alarm reminder3. Input voltage over 5V alarm protection4. constant voltage output: over-voltage and over-current protection5. Maximum output stabilivolt 4V, (3A Max)6. For AndroidFeatures of Dmtrab For Mechanic Iboot M..