[57mm Full-Range Speaker] High-fidelity sound reproduction with balanced highs and lows for immersive audio [HIFI Sound Quality] Delivers clear audio, perfect for enjoying music in any environment [Portable Design] Compact and lightweight with a convenient handle for easy carrying [Upgraded Bluetooth 5.0] Low power consumption and stable signal for uninterrupted streaming [Silent Cooling System] Efficient heat dissipation with minimal noise for optimal performance [Widely compatible] Intelligently compatible with various devices/APPs, supports mobile phones/TVs/tablets/computers and is compatible with all kinds of mainstream singing APPs Specifications: Microphone: Pickup: Capacitive Frequency range: 20HZ~20KHZ Power adapter: DC5V1000MA Charging time: 3.5~4 hours Battery: 1200 mAh Material: ABS Size: 40*135mm Speaker: Speaker power: 6W Frequency range: 20HZ~20KHZ Battery specification: 2000mAh Power adapter: DC5V1A Speaker diameter: 57MM Working voltage: 3.7V Reverberation: Echo sound effect reverberation Charging time: about 2.5 hours Material: ABS Size: 85*75*65mm