*NEW* wireless microphone in opened slightly damaged container box. Bluetooth. Has: •multifunction button •micro SD slot •echo control switch •volume control switch •same on/off switch for power & LED light (multicolored LED light modes) •built in speaker Instrcutions included. Has 4hrs. play time. Comes w/charging cable for rechargeable battery. Measurements are approx.: 3.25" diameter base, length is 10". Had awhile in storage, just collecting dust; dusted container box to the best of my abilty. Only tested to see if powers on. See photos. Ask if you have questions. Thanks for stopping by!