mouse green K9 wireless bluetooth microphone KTV singing children cartoon microphone AZ6231 Features:1. Bluetooth audio function, listen to songs at any time; two playback modes: Bluetooth, line in2. Microphone function: After Bluetooth connection, open the singing APP and sing your singing anytime and anywhere.3. Ear return function, can link to external high-power equipment to amplify the sound effect4. Cute cartoon design, brand new ABS and silicone environmentally friendly materials6. The battery is 600mAh, and the playback time can reach 4 hoursBluetooth specification: Bluetooth V5.0 + EDREffective distance 10mPlaying time: 4-5 hours (60% volume)Product size: about 180 * 53 * 47mmMaterial: ABS + Silicone