Fangrui Product Details Stable Performance, Strong Signal Reception, Linear Distance Of More Than 10 Meters Input Voltage: 5v Output Power: 4 Ohms 3w Bluetooth And Power Amplifier Functions Are Two-in-one. It Can Be Used After Connecting To The Power Supply And Speakers. It Can Be Used In A Small Space And Improve The Production Yield Rate It Has A Wide Range Of Applications, Including Bluetooth Speakers, Toys, Massage Chairs, Household Appliances, Electric Vehicles, Lighting, Photovoltaic Products, Fitness Equipment, Alipay And Other Qr Code Payment Voice Broadcasts, Etc Name:bluetooth Module Material:pcb Model:ca-6928 Input Voltage: 5v Output Power: 4 Ohm 3w Mit Power: 4dbm Colour: Navy Blue / Green Package Contents: 10 X Bluetooth Module Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.