【Connector Features】 Can be charged with square batteries. 【LED Indicator】 Equipped with a red LED, allowing for visual confirmation of connection status and data transfer activity. This facilitates troubleshooting. 【Durability and Design】 The transparent plastic case not only allows you to see the internal structure but also offers excellent durability. It's designed to withstand long-term use. - LED Indicator: Red LED - Connector: Male connector - Material: Transparent plastic case I haven't been able to confirm operation as I don't have the device on hand. Thank you for viewing.