Quick Details Certification: CE ROHS Output Interface: Double Usb Input Interface: Micro USB, USB Type C Supports Solar Energy: No Type: High Capacity, Portable, USB Universal Portable Power Bank, USB Universal, Digital Display Battery Type: Li - Polymer Battery Place of Origin: Guangdong, China Brand Name: OEM Model Number: P307 - SY2C - 20000MAH Weight: 410g Socket Standard: Micro USB Protection: Over - discharging, Short Circuit Protection, Over - charging, Low Tension, Over Power Protection Function: Charging Power Bank Battery capacity: 20000 MAh Material: ABS + PC Item: Power Bank Digital Display Logo: Accept Printing OEM Logo Style: Portable Phone Charger Life Cycle: 500times / Cycle Cell type: Li - Polymer Grade: A + + Warranty: 12 Months Socket Type: USB Port Is LED Lamp Illumination: No Dimension: L141.5 * W67.5 * H28.5mm Supply Ability Supply Ability: 20000 Piece/Pieces per Day