Small Bluetooth Speaker FM Radio Built in Mic Bone Conduction Speaker TWS Wireless Stereo large Volume Sound Box Aluminum Alloy

High-concerned chemical: None. Depth[mm: 40. Width[mm: 40. Input/Output: USB. Sound Mode: Stereo Sound Mode. Category: Speakers. Use: Home. Bluetooth Version: 5.0. Input Power(W: 25-49 W. Voice Control: No. Waterproof: Yes. Support APP: No. Material: Aluminum. Playback Function: Radio. Inbox adaptor: No. Intelligent Personal Assistant: None. Audio Crossover: Full-Range. Number of Loudspeaker Enclosure: 1. Power Source: USB. Channels: 5.0. Battery: No. Communication: WireLess. Speaker Type: Portable. Cabinet Material: Metal. Brand Name: OIMG. Origin: Mainland China. Certification: None. Power Source: USB. Material: Aluminum Alloy. Capacity: 400mAh. Size: 442cm. Function: Bone Conduction Speaker, FM. Wireless ver: 5.0, Bone Conduction transducer: 3Watt. Frequency range: 120Hz-16kHz. Battery: 400mAh Polymer Battery. Features: 1. Bone Conduction: The speaker adopts bone conduction technology, through the resonance principle to produce a bass effect, large volume, providing a unique sound