Characteristics and Interoperability V13 Wireless Microphone HIFI Speaker Karaoke Mic: Fun and entertaining, this microphone and speaker will help you unleash your inner singer. Product information BT Version of the Electrical Condenser: 5.0 5W of power DC5V is the input voltage. The maximum range of sound pressure is >115Db at 1 kHz THD<1. Range of response: 200Hz–20KHz Battery capacity: 1200mA at 3.7V Mix Mode: reverberating echo sound Wireless connection Bluetooth Sort: Handheld Uses: HIFI Speaker FM, Family Karaoke, and Mobile Karaoke 75-108 Hz on the radio Weight of Packing: 0.32 kg 20 x 6.7 x 6.9 in.