This item is speakers for the computer and laptop, built in Lithium-ion battery., with 2w speaker.

Detailed features:

1, the use of spiral shape design, strong dynamic, highly personalized.

2, the world's unique patented technology ----- expandable cavity resonance (larger sound chamber resonance space) design, playing together in prayer to open expansive light rotation

Resonance cavity, immediately increase the sound chamber resonance space, enhanced low-frequency output, do not use the palms together close rotating light resonance cavity expansion, the volume immediately smaller, easily into a pocket.

3, the built-in high capacity rechargeable lithium-ion battery, multiple circuit protection, and  recharge via the USB port , outdoor continuous support up to 4 hours or more playing time.

4, the innovative design of the hidden input, so that the overall product looks stylish.

5, comes with volume control, you can adjust the volume according to their own preferences, the use of more convenient.

Specification

1.) Rated power: 2.5 * 2W

2). Using frequency: 200HZ - 180KHZ

3). S / N: ≥ 80db 4). Output: 5V / +0.5 V

5). Power: Lithium-ion battery

6). Speaker parameters: 2W/4Ω

7).Size: 66x54 mm (approximately) Accessories: power and audio wiring / bag

 Bare: 0.178kg

Available colors: black / red / white / other