Specification: Material: Plastic Battery Type: Li-ion Battery Capacity: 3800mAh Charging Time: About 3 hours Input: 5V Output: 4.8V Note: Please allow 1-3cm (0.4-1.18") difference due to manual measurement and slight color variation for different display setting. Thank you for your understanding, nice day! Package Including 1 x Rechargeable Battery Pack 1 x Charging Cable