Item Type: Bluetooth Speaker Material: Metal Function: Sound Transmission Scope of Application: Suitable for Most Smart Devices with Bluetooth Bluetooth Version: V4.2 + EDR Transmission Distance: ≤10m/32.8ft (Obstacle Free Distance) Working Frequency: 2.4G-2.480GHz Receiving Sensitivity: -90dB Distortion: ≤3% Output Power: 2 x 3W Speaker Specifications: Approx. 40mm/1.5in 4Ω/3W Built in Battery: Polymer Lithium Battery Built in Battery Capacity: 1000mAh 1、Stereo: This stand speaker has a professional stereo design, perfect sound quality, with two 3W speakers, high performance, to provide you with an immersive sound experience.  2、Rechargeable: Equipped with 1000mAh rechargeable battery, can play for up to 10 hours, humanized card slot design, suitable for Mini, tablet, smart phone, etc.  3、Compatible: This speaker has a standard 5mm/0.1in auxiliary input for connecting external non bluetooth sound devices, such as MP3, computers, notebooks, etc.  4、Portable: Small wireless speaker with stand function, it is very convenient to watch videos and play games, free hands, easy to carry, suitable for home travel.  5、Fashionable: The bluetooth bracket speaker has a stylish appearance, simple line design, very beautiful, and can be placed on any desktop without taking up space.