Speakers IP67 Waterproof NFC Speaker TWS BT4.2 HiFi Speaker 40W Features: *More rich music layering, offering great sound effects. *IP67 waterproof. Adopts BT4.2 technology which can easily pair with your wireless devices. *Built-in high definition microphone enables you to receive calls easily and makes your hands free. *Dual 20W speakers deliver multi-dimensional sound, let you enjoy high-quality music freely. *Built-in dual rechargeable 2500mA batteries support at least 8 hours of working time. Specifications: Model: X3PRO Color: Black, Blue (Optional) BT Version: 4.2 Transmission Range: �8mm (Open Field) Output Power: 2 * 20W Battery Capacity: 2 * 2500mAh / 7.4V Power Supply: Type-C 5V/3A Frequency Response: 80Hz-18KHz Distortion: �.0% Playing Time: � hours Charging Time: 3 hours Package Size: 26.1 * 12.3 * 7.1cm / 10.28 * 4.84 * 2.8in Package Weight: 844.5g / 29.79oz Package List: 1 * X3PRO Speaker 1 * 3.5mm Audio Cable 1 * Type-C Data Cable 1 * Lanyard 1 * User Manual (Chinese/English)