USBC rechargeable 18650 Battery Case Attachment For SONY DAT TCD-D3 The battery case contains two 18650 batteries, totaling 4000 mAh. USBC charging port with charging indicator light The color is random, the one you receive may be black or gray 3D printing requires production queuing time, usually we ship items in about a week Dear customer, I'm sorry, because 3D printing is not as perfect as traditional plastic products. If you receive the items and have any questions, please leave a message to me. Please don't worry, the items are guaranteed, thank you 3D printing material can withstand high temperatures up to 65?, 149? please pay attention to the temperature