Guarantee of Stable Transmission Bluetooth V5.1 ensures faster transmission, a larger range, and a more stable connection. Powerful Bass Provides Dynamic Feeling 40mm NdFeB driver with excellent resolution delivers clear, detailed, and powerful sound. Up to 30 Hours Playback Boasting its large battery capacity, the headphone provides 30 hours of playtime. Never worry about the battery running down. Classy and Minimalist Design The integrated appearance, simple, low-key, and stylish, the matte surface highlights the high-end texture and represents a trendy preference. Ergonomic Design for Comfort Wearing Over-the-ear design using breathable soft leatherette ear cups for all-day comfort. Two Devices Easily Switch Over Support connecting with two Bluetooth devices simultaneously. Easily switch between work and entertainment. Wireless/Wired is Up to You A 3.5mm audio cable is included for wired connection, keeping the music on even when the battery runs out.