Features: Professional dynamic microphone, clearly pickup, intelligent noise cancelling. DSP intelligent digital processing chip solves noise problems from the root. Build in dynamic microphone cores, low distortions. Double speakers with strong and powerful sound. 7 kind sound effects, one button switching, easy and fun live interaction. Suitable for home KTV singing, carnivals parties, event hosting, conference speeches, outdoor performances, etc. Specifications: Material: ABS+Electronics Color: refer to picture to selection please Size: about 230x39mm/9.05x1.53inch Model: K11 Main chip: Double cores digital DSP chip Microphone: Dynamic coil microphone cores Bluetooth-compatible version: Bluetooth-compatible 5.0 Speakers power: 4Ω 5Wx2 Frequency response: 20Hz-20KHz Maximum sound pressure:>115dB 1KHz THD<1% Power supply method: Build in 18500 battery Charging power supply: DC5V1A Battery service life: 3-4H Charging time: 2-3Hrs Working temperature: -10℃ -45℃ Connection: Bluetooth-compatible Package Includes: 1pc Handheld Microphone note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.