Don’t let the single Lightning Connector port slow you down. With iHinge-LT Enjoy music or calls when on the move while charging your iPhone. The 12W Pass-through charging powers up the iPhone/iPad at maximum speed and the 48KHz audio output ensures high-quality audio support. The iHinge-LT does not require any additional software to work. 
 
Features:

• Listen to Audio and Charge at The Same Time:
  The main downside to not having a headphone socket on the latest iPhones is that you can charge or listen to music, not both. Well, now you can. The Promate iHinge-LT Lightning to Dual Lightning Port Audio Splitter allows you to connect Lightning headphones and a Lightning Sync charging cable at the same time, meaning you can listen to music and let your phone charge simultaneously.
• Supports Pass-Through Charging:
  Don't be concerned that this is a compromise option in terms of charging power. This cable allows 12W pass-through charging powers up the iPhone/iPad at the maximum speed, which is no different from charging directly with your Lightning cable. 
• High-Quality Audio Output:
  Enjoy a high-quality music stream with this Promate iHinge-LT Audio adapter. The sound passed through this adapter will remain of high quality, with no loss in bass or treble. Digital-to-Analog converter ensures full audio quality and supports up to 24bit 48kHz lossless output.
• Sync over iTunes:
  Smart Chipset Control Technology, exclusively compatible with iTunes, sync with iPhone. The data transmission speed is the same as that of the lightning cable.
• Unique 90 Degree Design:
  The unique design lets you play games or watch movies without any influence. Besides, other similar splitters have a long cable, which is a little messy when putting together with the power cable and headphones. But our phone adapter splitter solves the issue. It saves space and is easy to use.
• Plug and Play: 
  Just insert your charger or earphones into the iPhone Adapter and then it plays, no App needed, no additional software needed, and it is easy to carry to anywhere.
• Compact and Lightweight Design:
  This Promate iHinge-LT Audio Splitter is compact and lightweight - you will barely notice it is there! With a length of 12cm and little to no bulk, you can still take it with you to the gym or on the trip. Portable to Carry Small & Portable, easy to put it in your bag/pocket. It doesn't require additional audio software, just enjoy music with your favourite headphone at any time.
• Designed to be Used with Apple Lightning Devices:
  The Promate iHinge-LT Adapter has been designed to be used with any Apple devices which have a dedicated Lightning connection meaning it is compatible with the latest iPhones. This iPhone Splitter supports all iOS system versions, including the latest 12 versions. Compatible for iPhone 7 / 7 Plus/ 8 / 8 Plus / X/ XS/ XS Max /XR/ iPad / iPad Pro etc.

Specification

• Operating Voltage: DC 5V/2A
• Audio Output: 2 x 20mW