Tin Buds 3 Unboxing & Graph TINHiFi Tin Buds 3 is the first Bluetooth earphone to utilize a 6mm beryllium-plated dynamic driver. With this driver upgrade, the same professional audio engineering strategy used in the T3 Plus is utilized in the Tin Buds 3 to achieve a studio-monitor-like sound. Beryllium Diaphragm Drivers Balanced Tuning Bluetooth v5.2 aptX, aptX-ll 90 Days Standby, 6.5 Hours of Play Charging case battery: 400mAh Price: 89$