The Beoplay Eleven are high-fidelity, premium true-wireless (TWS) in-ear earbuds from Bang & Olufsen. 
 
Key Points:
 
Active Noise Cancellation (ANC): These are B&O’s most advanced ANC earbuds — they offer improved noise cancellation, especially in low-frequency ranges, through pressure-relief outlets. 
Transparency Mode: There’s an enhanced transparency mode that lets you hear your surroundings more clearly. 
Call Quality: Six microphones (MEMS) pick up voice clearly, with a slightly larger mic inlet and a fine mesh to reduce wind noise. 
Drivers / Sound: Uses 9.2 mm neodymium drivers for rich, powerful sound. 
Build & Materials: The buds are made from a combination of aluminium, toughened glass, polymer, and silicone, giving a very premium feel. 
Water & Dust Resistance: Rated IP57, so they’re protected against dust ingress and can handle being submerged in water briefly. 
Battery Life:
 
With ANC: ~6 hours in the earbuds. 
Without ANC: ~8 hours. 
With the charging case: up to 20 hours with ANC on, 28 hours without ANC. 
Charging: The case charges via USB-C, and also supports Qi wireless charging. 
Connectivity: Bluetooth 5.2, and supports multipoint (can connect to up to two devices at once). 
Codecs: Supports SBC, AAC, and aptX Adaptive. 
Design / Fit: Soft in-ear silicone tips for a comfortable fit. 
Controls: Touch-sensitive controls on the buds for managing music, calls, and ANC modes. 
Sustainability: The battery is service-replaceable, which is a move toward more sustainable design. 
Weight / Size:
 
Each earbud: ~6 g. 
Charging case: ~53 g. 
Designers: Designed by Thomas Bentzen and the B&O design team.