Safe to use and won't harm or damage your mobile phone. Reusable and convenient for travel being lightweight and compact.

Features:

• Maximum output voltage: DC 6V
• Maximum output current: 300 mA
• The Battery charging time: 1 Minutes
• Talking time:3-5 Minutes
• Size: 57*45*30mm/2.24"*1.77"*1.18"(Approx.)
• Puts power in your mobile when there's no power available, Never be caught out with no power again.
• Charges your mobile Phone without using grid electricity, sunlight, cells or batteries.
• Do not rotate too fast maintain 100-120 rotations per minutes, please no rollback.
• Keep the charger away from heat ,fire, water and other cool places.
• Built-in LED lights up and power is being generated and your phone is being charged.
• Hand-winding charger with the interface of USB.