Lightning to 30 Pin Adapter 3.5mm AUX Audio Port Support Charging Data Transmission for iPhone 6 6 Plus 5s 5c 5 4s 4 iPad iPod - AliExpress
Amazon.co.jp: ROSYCLO Lightning to 30 Pin Adapter, Apple MFi Certified iPhone Charging Data Sync Connector Cable 8 Pin Male to 30 Pin Female Output Adapter Compatible with iPhone 12/11/X/8/7/6/5/iPad/iPod, White, No Audio :
Lightning - 30ピンアダプタ - Apple(日本)
Amazon.com: Apple Lightning to 30 Pin Adapter,MFi Certified 8 Pin Male to 30 Pin Female Connector Converter with iPhone Lightning Charger Cable Cord Compatible iPhone 12 11 X 8 7 6P 5S
Review: Apple Lightning to 30-pin adapters -- use older accessories with your new device - iPhone J.D.