Brand Name: GRWIBEOU Power Source: None Power Source: USB Inbox adaptor: No Cabinet Material: Plastic Audio Crossover: Full-Range Battery Charge Time: / Waterproof: Yes Voltage range: No voltage Communication: Bluetooth Speaker Type: Portable Channels: 2 (2.0) Support APP: Yes Battery: Yes Category: Speakers Use: Home Origin: Mainland China Sound Mode: Hi-Res Sound Mode Surround sound channel configuration: 1.0 Audio latency: / Voice Control: No Power Source: None Power Source: USB Number of Loudspeaker Enclosure: 1 Input Power(W): 200-299W High-concerned chemical: none Output Current: / Input/Output: Coaxial Intelligent Personal Assistant: NONE Certification: CE Choice: yes semi_Choice: yes