The BOYA BY-AP4 is your new TWS earbuds who stands out with comprehensive upgradation. No matter what’s in your mind: color preference, long-time wearing feeling, charging, or a better sounds music...it answers! Excellent Features: -Bluetooth 5.0 Enables highest wireless audio performance -Outstanding Sound Rich, clear and warm sound effect, remarkable quality of calls -Ultra-low Latency Ideal for gamers and video watching -Smart Touch Operation Freely adjust the volume, switch songs or wake up the voice assistant in your fingertip -Single/Double Ear Mode Switchable Accept anytime you prefer to wear one or two earbuds, without distinguish main or auxiliary -Type-C Charging 6 hours battery life, total up to 22 hours with the Type-C charging case