Controls- The true wireless earbuds offer easy access multifunction button controls with stereo calling feature for an overall seamless user experience. Bluetooth- These true wireless earbuds offer a true wireless experience for real time audio with Bluetooth v5.0. Voice Assistant- You can access the instant voice assistant via just a single press of the Multifunction Button.Playback- Airdopes 121v2 offers a nonstop playback of up to 3.5H with each charge and an additional 10.5H playtime with the included charging case Lightweight- With a dual tone finish on a lightweight ergonomic design weighing just around 4g per earbud, get ready to groove in full flow with Airdopes 121v2v2 TWS earbuds.