Harmonics Twins Mini a tiny in-ear Mini Bluetooth HD Stereo Earphones with True wireless Stereo (TWS), functionality and an active-smart case for storage cum charging of the wireless earphones. It gives you true freedom from cables dangling from your head and gives rich Hi-Fidelity True Wireless Stereo (TWS), experience ensuring that your music listening smooth without any worry of cable pulling from ears and bouncing around. You can share music listening experience with your friend or special one too. It uses latest and most power efficient Bluetooth 5.0 BLE low energy which does not drain the battery of your phone quickly. Wireless connection with smartphone is established in a blink of eye. With Advanced ATS3009 chipset, get amazing powerful true HD stereo music experience with 8 mm drivers. Both earbuds can be used together for one device or can be used separately. Total 12 hours =3 hours in-earphone+ 9 hours charging case time, also for 3009, playback time can be increase by 40mins-1 hour. It is sweatproof. It has ergonomic design that can fit in ears very well to have comfortable wearing and also not fall out. It is sleek and compact pocket design to stress it’s very small and light to carry. When you take them out, they are turned on waiting to pair and you also only need to pair the first time.