Featured is a capsule speaker that boasts a patented technology. The built-in magnet inside the speaker case helps keep the 2 speakers together. The inherent 3.55mm audio plug is flexible to use. The built-in rechargeable lithium battery showcases multiple-electro circuit protection. The USB jack supports recharging repeatedly, enabling more than 4 hours of performance. 

• Designed with 2.0 audio tracks with powerful volume.
• Net weight: 112g.
• Speaker: φ36mm.
• Input sensitivity: 380mV (L/R).
• Power output: 1.7W.
• S/N ratio: 80dB.
• AMP frequency range: 280Hz-16KHz.
• Charge voltage: 5V+0.5V.
• Suitable temperature: 0ºC-40ºC.