[DETAIL] Features: 1, the sound quality of each frequency band is extremely clear! 2, the resonant horn can produce 8 inches of bass sound quality. 3, the resonant horn can achieve full frequency 20Hz to 20KHz! 50MM Impedance power: 4Ω 25W Impedance power: 8Ω 20W Size: 50MM X 21 MM weight: 270 g / 1pcs Maximum power: 30W Minimum resonance frequency: 60 Hz Frequency response range: 60Hz-20KHZ Sensitivity: 86 db Voice coil diameter: 28 mm Magnet: Ndfeb double magnetic Black 50 MM Impedance: 4Ω. Power: 3-25W Size: 50MM X 21MM Lowest Resonance Frequency:58HZ. Effective bandwidth: 58Hz-20khz. SPL:86dB. Distortion :5% less black wire Connect the negative White wire connect the positive Packing List : Speaker x 1pcs [ATTRIBUTES] - Item Condition: New - Hign-concerned Chemical: None - Weight[g]: 300G - Item Condition: New - Hign-concerned Chemical: None - Weight[g]: 300G - Input/Output: Other - Sound Mode: Stereo Sound Mode,Smart Sound Mode,Live Sound Mode - Category: Speakers - Use: Home - Input Power(W): <25 W - Active Noise-Cancellation: Active - Impedance: 4-8 Ohm - Voice Control: No - Waterproof: Yes - Support APP: No - Material: Metal - Inbox adaptor: No - Intelligent Personal Assistant: None - Audio Crossover: Full-Range - Number of Loudspeaker Enclosure: 1 - Power Source: None - PMPO: 30W - Channels: 1 - Battery: No - Communication: Induction - Speaker Type: Portable - Cabinet Material: Metal - Brand Name: PJ.MIAOLAI - Power Source: None - Origin: Mainland China - Certification: CE,FCC,RoHS