BOULT Z40 Achieves Remarkable Milestone: Surpasses 1 Million Sales, Equivalent to Stacking Earbuds as High as 67 Burj Khalifas! BOULT, the fastest-growing wearable brand is getting ready to launch the newest TWS soon, an addition to the coveted Z40-Series range which has been the most successful TWS from the brand. Having February 21, 2024 Boult/News