How many iPhone cases have a high-quality speaker and a battery pack built in? None that I can think of. The Peri Duo smartphone case has done it. It doesn’t just give you an upgraded audio experience, but also charges your phone.
The case is pretty cool looking with a retro-modern style. It works as a Wi-Fi or Bluetooth portable speaker, so you can listen to your music while on the go. Its 2,900 mAh battery delivers an extra 130 to 160% battery life for typical smartphones. Not too shabby.
The Peri Duo has an integrated hi-resolution DAC, a programmable single-chip audio digital signal processor, and true equalization settings with embedded DSP firmware with the complementary Peri audio app.
The Peri Duo case also has an embedded microphone for phone calls. It comes in Black/Silver, White/Gold, and Red/Black. There is also a special edition Black/Black. The $189.99 Peri Duo case is made for the iPhone 6 and 6S models, and there’s the new Duo-Slim for iPhone 7/7 plus models, which you can get an early bird deal on Kickstarter for as little as $69.