•Bluetooth 5.3
•Level dependent function for environmental listening, limited to 82dBA
•Background noise-reducing microphone for clear calls in loud environments 
•Hear the surrounding sound when use Bluetooth  
•Three functional modes
•Six Volume levels for listening    
•4 hour auto shut-off                        
•Rechargeable battery or AAA compatible  
•Battery up to 15 hours (Bluetooth)- 40 hours (Noise Reduction)
•Memory foam ear cushions 
•Ultra-lightweight headband