The Green Lion Siena True Wireless Earbuds are your best companion for listening to music. These earbuds are equipped with environmental noise cancellation that increases calls and music sound quality. The Siena earbuds are IPX5 water-resistant and are suitable for workout and gym sessions. Lastly, this earphone has Bluetooth version 5.4, which gives a stable and strong connection within a 10-meter range. If you care for the quality of the music and want clear calls with your earbuds, the Green Lion Siena True Wireless Earbuds should be your go-to option. Specification ​Material: ABS + Fabric Earbud Battery: 40mAh Case Battery: 350mAh Charging Port: Type-C Charging Input: 5V/200mA Charging Time: 2 Hours Playtime: 5 Hours BT Version: V5.4 Transmission Range: 10 Meter Speaker: 10mm Impedance: 32Ω Sensitivity: 105±3dB