Playback- boAt Nirvana Ion comes with a massive playback of 120 hours including 24 hours of playback per charge Crystal Bionic Sound with Dual Modes- These true wireless earbuds have Crystal Bionic Sound powered by Hifi DSP 5 which support dual eq modes: boAt Signature Sound and boAt Balanced Sound Clear Voice Calls- Nirvana Ion comes with 4 mics ENx Technology which helps block unwanted noise and make sure your voice gets delivered clearly while you are on your calls Low Latency- These earbuds are equipped with Beast Mode which offer low latency of 60ms removing any kind of lag during your gaming sessions In Ear Detection- The tws earbuds come with in ear detection, just plug the earbuds in your ears to resume music and pull them out for them to pause Patented Pocketable Design- The ergonomically compact size of the Nirvana Ion lets you fit them anywhere in your pocket or bag. So carry your music along, everywhere you go IP Rating- Its IPX4 rating make them an ideal fit for your workouts as it keeps them sweat free. Bluetooth Version- Live a truly wireless life with the most advanced BT 5.2 technology. Enjoy flawless, uninterrupted and smooth delivery of music.