Audio-Technica Audio Interface (ATR20) Fantastic KTV Live Sound Microphone: Dynamic Mic with 2 channel stereo Speakers and professional echo reverberation creates a true KTV atmosphere even you just stay your home. Universal Compatibility and Easy to Operate: Easily connect via Bluetooth or 3.5mm audio jack to your iphone iPad android Smartphone iPod, Mac, tablets, laptops, TVs for music entertainment Long Lasting Certified Safe Battery: powerful built-in lithium-ion battery 2200 mAh, this Bluetooth karaoke microphone will allow you to enjoy music for as long as 10 hours BEST GIFT FOR YOUR LOVED PERSONThe karaoke microphone is portable and easy to hold. It's comfortable for both adults & kids to practice and share the favorite songs on music app 100% MONEY-BACK GUARANTEE  We vouch for our karaoke microphone's quality and durability. Each of our microphone is backed by an outstanding 90-day Warranty Policy.