Cdyle Adapter Splitter for Phone 7 Plus/8/8 Plus Dual Adapter Audio headphone Adapter.with Call & Audio Function.Compatible - Support IOS 11 4 IN 1 FUNCTION: Support up to 24-bit / 48 kHz audio output. In addition, it not only supports charging and listening to music, but also supports remote controls and microphones. Audio and charging are synchronized. SUPPORT LISTEN MUSIC + CHARGING + PHONE CALL + MICROPHONE AND REMOTE ON LIGHTNING HEADPHONES AT THE SAME TIME. HIGH QUALITY: 100% copper wire core to provide you with high speed and stable signal transmission and lossless digital sound quality. Excellent compatibility: Designed for iPhone X, iPhone 8/8 Plus, 7/7 Plus, and any lightning device. Support upgrade IOS 11 upgraded chip-set, making the adapter compatible with any Lightning device that runs iOS 10.3 or later. Lifetime Guarantee: We sell only high quality products But if for whatever reason this item does not meet your requirements, we will provide you with a full refund at anytime.