Features: 57mm full ranged large loudspeaker, enjoy HiFi sound. Small in size and light in weight, with a portable handle that is easy to carry. Bluetooth-compatible 5.0 chip, stable transmission, low power consumption, strong interferences resistant ability, and almost no delay. Multiple voice changes, one button switching, full of fun. Rich interfaces, supporting multiple playback modes. Widely used in square dancing, teaching, street performances, children's singing, conference training, camping. Specifications: Material: ABS+Electronics Color: refer to picture to selection please Loudspeaker: about 85x75x65mm/3.34x2.95x2.5inch Mic: about 135x40mm/5.31x1.57inch Microphone parameters: Pickup: Back polarized capacitive microphone head Working voltages: 3.7V Frequency: 20HZ-20KHZ Battery specification: 1200mAh Power adapter: DC5V≤1000mA (compatibility with mobile phones charger) Charging time: 3.5-4 hours Loudspeaker parameters: Bluetooth-compatible version: BLE5.0 Horn diameter: 57mm Loudspeaker power: 6W Working voltages: 3.7V Frequency: 20Hz~20KHz Reverberation: Sound Effect Reverberation Battery specification: 2000mAh Charging time: approximately 2.5 hours Power adapter: DC5V≤1A (compatibility with mobile phones charger) Package Includes: 1pc Loudspeaker with 1pc Microphone note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.