Frezzil HD Voice True Wireless Neckband Earphone with Digital Display

The Frezzil M4 Wireless Bluetooth Neckband is an affordable, sport-focused audio device designed for everyday convenience and active routines. It combines a comfortable around-the-neck fit with helpful visual indicators.
Key Specifications & Features
Battery & Power: Built with a long-lasting battery life optimized for extended workout sessions or commutes.
Digital Display: Features an integrated LED digital screen on the neckband to show real-time battery status.
Sound Profile: Engineered with good sound production, providing reliable audio for music and voice calls.
Design & Fit: Utilizes a lightweight "collar wear" layout with standard music and volume controllers.
Intended Use: Tailored for sports modes, fitness training, and general portable everyday listening

Technical Parameters
Parameter           Specification Details
Bluetooth Version: Bluetooth 5.4 (backward compatible with older versions)Transmission Range: Up to 10 meters (33 feet) without obstacles
Audio Enhancement: HD Sound with Heavy Bass Output & Dolby Surround      Certification
Noise Reduction: ENC (Environmental Noise Cancellation) + German Noise Reduction 3.0
Display Type:   LED Digital Screen (real-time numerical battery percentage indicator)
Form Factor: Flexible, lightweight collar-wear neckband 
Controls: Integrated mechanical buttons (Volume +, Volume -, Power/Play/Pause)Water Resistance: IPX5 Sweatproof rating for sports and fitness use
Charging Interface: Type-C USB Port
Battery & Power Performance
Playtime Capacity: Engineered for extended usage, delivery variations support up to 50 hours of continuous music playback depending on volume thresholds.
Magnetic Buds: The in-ear earbuds feature magnetic backings that clip together around your neck to prevent tangling and preserve battery when dropped out of your ears.

Power & Charging Specifications
Input Voltage: 5V (Direct Current), which is standard for most Type-C mobile charging ports.
Charging Current: Generally pulls 0.5A to 1A during a charge cycle.
Optimal Charging Wattage: Best charged using a standard 5W power adapter (5V/1A).

Safety Tip: Avoid plugging the neckband into high-wattage fast chargers (like 18W, 33W, or 65W smartphone bricks). High-wattage power supplies can overheat or permanently damage the small internal lithium battery over time