Speaker beeps

Diameter of heat conductor: less than 15mm

Type: Headphone

Nozzle diameter: 2 8 mm

Wireless Lavalier Microphone – Dual Channel for Outdoor Use Color:Black Speaker beepsProduct information : Microphone type: capacitor Input voltage: 220V Color: Type C (rechargeable version), Apple (rechargeable version), One Tow Two Type C (rechargeable version), One Tow Two Apples (rechargeable version) Bluetooth version: 2. 4G Shell technology: ABS Built in battery capacity: 300mA 500mA Life: 8 12 hours Signal to noise ratio: 70db Frequency response range: 20Hz 20KHz Packing list: Microphone x 1 Mobile phone holder x 1