Note: 1. Shipped with built in battery,_x000D_2. Manual measurement, please allow slight error. Specification: Item Type: Mini Bluetooth Speaker_x000D_Material: Silicone_x000D_Product Size: Approx. 6x6x6cm / 2.4x2.4x2.4in _x000D_Frequency Response Range: 280Hz-16KHz_x000D_Battery Type: Lithium Battery_x000D_Battery Capacity: 500mAh Features: 1Heavy Bass: Wireless speaker is a NdFe speaker unit, the bass is thick and powerful, the sound is full of shock, visible heavy bass. 2HiFi: Portable bluetooth speaker is a tweeter and low frequency radiator, hifi output to restore the scene, enjoy the panoramic sound. 3Noise Canceling Microphone: Wireless bluetooth speaker has a built in HD noise canceling microphone, so you can easily answer calls. 4Bluetooth 5.0: Wireless speaker is version 5.0, stable without lag, low power consumption, fast transmission, stable signal, and compatible with more devices. 5Seven Color Light: Portable bluetooth speaker comes with a variety of color lights, which can be pulsating with the rhythm of music. PackageList: 1 x Wireless Bluetooth Speaker 1 x USB Data Cable 1 x Lanyard