Langsdom BS21 Long Battery Life Magnetic Switch Neckband Bluetooth Headphones

1. Equipped with high-efficiency batteries for ultra-long battery life, meeting all-day usage needs.
2. Features a 13mm high-dynamic moving coil driver, delivering vinyl-grade sound quality with rich bass, an expansive soundstage, and highly restored vivid audio.
3. Supports ANC active noise cancellation, which accurately cancels out ambient noise by generating anti-phase sound waves, creating a quiet private space.
4. Equipped with ENC call noise reduction algorithm and dual high-definition microphones, intelligently separating human voice from background noise and reducing wind noise for crystal-clear calls.
5. Convenient magnetic switch control: Earphones automatically power on and connect to paired devices when separated, and power off when attached together, eliminating button operations for easy use and storage.
6. Adopts Bluetooth 5.4 technology for enhanced signal penetration, reduced sound loss and latency; paired with a ceramic anti-interference antenna for stable connection in complex environments.
7. Supports e-sports game mode with dual-channel low-latency transmission, as low as 0.05 seconds latency for smoother audio-visual synchronization.
8. Waterproof coating + waterproof mesh design provides IP-rated water and sweat resistance, making it worry-free for sports use.
9. Neckband design fits comfortably around the neck and stays securely in place during running and other sports activities.

Product Specifications
1. Speaker Size: 13mm
2. Bluetooth Version: V5.4
3. Transmission Range: 10m
4. Frequency Range: 2.402-2.480GHz
5. Charging Voltage: DC5V
6. Battery Capacity: 300mAh
7. Charging Time: approx. 1 hour
8. Music Time: approx. 40 hours (ANC off), approx. 30 hours (ANC on) at 50% volume