Certification: CE,ROHS Power Source:Battery, DC Support Apt-x:NO Support APP: NO Battery: YES, 300mAh Number of Loudspeaker Enclosure: 1 Audio Crossover:Full-Range Set Type: Player Sets Material: metal, ABS Waterproof:NO Communication: bluetooth PMPO: 3W Support Memory Card:NO Speaker Type: PORTABLE Output Power: 3W Remote Control:NO Cabinet Material: metal Frequency Range: 80Hz-20KHz Display Screen: NO Intelligent Personal Assistant: None Voice Control: NO Built-in Microphone: YES Brand Name:TinVIA Technology Model Number:SP-338 Type: Active Use: Portable Audio Player, Mobile Phone Channels: 2 (2.0) Special Feature: Wireless, PORTABLE Place of Origin: China Product name: Bluetooth Portable Speaker Size:70*40*110 (diameter)mm Weight:95g Power:4Ω 3W SNR:≥86dBA Frequency:90-20kHZ Play Time:2-4 hours