USBC rechargeable battery Case Attachment For SONY Walkman WM-F100III F103 USBC rechargeable lithium battery case, we will provide a charging cable According to different models, Lithium battery capacity is 600-800mAh 1.2V voltage can be understood as the actual capacity is 1800-2400 mAh 3D printing custom products, we usually send items within two weeks 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 Dear customer, the models on the title are not compatible with each other. Please tell me the exact model after purchase so that we can send the items in time. Thank you.