USBC rechargeable Gum Battery NH-14WM NH-10WM NC-6WM For SONY WALKMAN -Red $23.99 per piece Sorry, due to the shortage of raw materials, the red color is no longer available. Only black and white are available. If you need more colors, you can buy another one. https://www.ebay.com/itm/296743070562 Sincerely Thank you ?In bulk, MD not included. Just the battery? This is a rechargeable lithium-ion battery with a built-in USB charging port. We will provide a USBC charging cable. 880 mAh The characteristics of lithium batteries are stable voltage and will not suddenly shut down when the battery is low. The battery has its own indicator light, which will remind you when the battery is low. So lithium batteries are a better choice. $25.99 per piece 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