Xiaomi Sound Party NS7 Portable Bluetooth Party Speaker

Model: MDZ-39-DB 
Product Dimensions: 255 × 92 × 92 mm 
Design: Stylish and portable, with streamlined shape and a hidden handle — easy to carry for parties, trips, or outdoor fun. 
Net Weight: Approx. 1.2 kg (≈ 1200 g) 
Audio Output: Total 50 W — 35 W woofer + 15 W tweeter.  
Sound Quality: Tuned by the Harman Golden Ear team (Harman AudioEFX) for deep bass, rich mids and crisp highs.  
Bass Boost Mode: Yes, for enhanced bass impact during music or parties.  
Frequency Range: 60 Hz – 20 kHz  
Signal-to-Noise Ratio: ≥ 80 dB  
Connectivity: Bluetooth 5.4 + NFC (one-tap pairing for supported Android phones)  
Transmission Distance: up to 25 m  
Battery: Lithium-ion, 7.3 V, 5200 mAh  
Playback Time: Up to approx. 26 hours at 50% volume (with lighting & Bass Boost off)  
Fast Charging / Power Bank: Supports PD fast charging; a short 10-minute charge can give ~2 hours of playback.
It can also act as a power bank (5V 3A max) for other devices.  
Water & Dust Resistance: IP67 rated | suitable for parties outdoors or near water (resists splashes and dust)  
Stereo Pairing: Yes | can pair two units for stereo sound.