Brand Name: AEVYVKV Power Source: Battery Power Source: USB Inbox adaptor: No Cabinet Material: Plastic Audio Crossover: Full-Range Waterproof: No Voltage range: Low voltage non-USB (below 75V DC, below 50V AC) Communication: Induction Speaker Type: Portable Channels: 2 (2.0) Support APP: No Battery: Yes Category: Speakers Use: others Origin: Mainland China Sound Mode: Standard Mode Voice Control: No Power Source: Battery Power Source: USB Number of Loudspeaker Enclosure: 1 Input Power(W): <25 W High-concerned chemical: None Input/Output: USB Intelligent Personal Assistant: NONE Material: Plastic Choice: yes