4 ms·I wish the improved the length of the cordle instead of adding BT.by oweiler 5y agoI wish the improved the length of the cordle instead of adding BT.andylynch 5y agoIt’s detachable for safety-that even say a regular 3.5mm lead can substituterjmunro 5y agoI think that's a toy safety thing, so that kids can't strangle themselves with it :-(