Description: Vacuum Tube: 5.0 speakers choose customized vacuum tube, durable, timeless, mellow and rich sound with ambient light. E.A.I sound and electricity integration technology: DSP sound processing technology and E, A.I. sound and electricity integration technology, matching the speaker structure, release the round and full original sound. E.A.I bass enhancement technology, enhance bass performance. 5.0: 5.0 wireless transmission technology, high efficiency transmission and low latency, and can play music stably without stopping. Customized Full Range Speakers: Desktop speaker using polymer speaker materials, the sensitivity is improved, the complete audio signal spectrum is extracted, the shocking sound effect is exerted, and a smart auditory language is created. Vary Interfaces: Retro Radio with support USB socket, LINE IN socket, DC5V socket, TF card socket, signal receiving antenna, equipped with retro buttons, texture buttons, elegant and fashionable, easy to operate. Specification: Playing Time: 8 Hours Expanded Storage: 32gb Protocol: 5.0 Number of Speakers: 2 Effective Distance: 10 Meters Playback Format: Mp3 Power : USB Battery Capacity: 1200mah~2000mah Size Chart: Size(Approx.):16x12X9.5cm/6.30x4.72x3.74inch Package Includes: 1 Pcs 5.0 Speakers 1 Pcs USB Cable 1 Pcs 3.5mm Audio Cable Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!