Herdio 4 Inch 320 Watts 2-Way Bluetooth Ceiling Speakers Package Perfect For Product Details Wireless Serise Connection:4 channel Bluetooth amplifiers lets you pair 4 speakers for a powerful surround sound. simple and easy to use 100FT RANGE:Advanced 5.0 ensures more stable and instant pairing compared to 4.2 and lower; maintains a strong connection up to 100 ft unobstructed away from your device; 3.5mm aux in jack for connecting devices Flush Mount Desgin?Compact flush mount design for simple easy installation in-wall / in-ceiling , or pre-cut speaker openings, for in home use, office, professional, or custom audio applications on any flat surface. Dimensions: Total Speaker Diameter: 6.4 Inch Cut Out Diameter: 5.7 Inches Total Speaker Depth: 2.6 Inches Mounting Depth: 2.6 Inches What's In the Box: 4 Inch Ceiling Speakers X4, 4 Channel Amplifier X1 , 5M Speaker Cable X2, 3A Power AdapterX1 Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.