Details: Wireless Version: V5.2 + EDR Ten meters is the working distance. Speaker Dimensions: 2 inches by 2.5 inches 2.4GHz is the 3Ω transmission frequency. Features include wireless, USB, TF, FM, microphone input, and TWS. 10W is the output. 1500mAh, 3.7V battery Music Duration: 2–3 hours