Features: Large 3inch speaker, with 360 degree pickup, surround sound, digital amplifier chip, clear and accurate sound. Build in 2200mAh high-capacity battery for long time use. Intelligent digital display, supports USB flash drive and memory card playback, can connection to computers, tablets, and mobile phones. Small size and portable, easy to carry and use. Equipped with earphone, ergonomically designing for comfortable wearing. Suitable for multiple scenario, it can be used for teaching tourist guides, gatherings, speeches, training, promotions, etc. Equipped with hanging rope and buckle, it can be used for both tying and hanging, with adjustable length. Specifications: Material: ABS Color: white, black, rose gold(optional) Size: approx. 9.2x8.4x2.8cm/3.62x3.31x1.1in Product Name: Multifunctional Voice Amplifier Function: Supports microphone, memory card insertion for playback, screen digital display, supports recording function Battery: 2200mAh 18650 Battery Charging time: about 3hrs Package Includes: 1Pc Portable Voice Amplifier 1Pc Corded Microphone 1Pc Charging Cable 1Pc Fixing Belt with Buckle 1Pc User Manual note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.