Specifications: Mini USB bluetooth-compatible adapter with high speed up to 3Mbps. Realizing the wireless connection between computer and other bluetooth-compatible devices. Universal USB interface to support most devices. Lightweight and compact, easy to carry for different usage. Item Name: USB bluetooth-compatible Adapter Material: ABS Bluetooth Version: BT4.0 Speed Rate: up to 3MBps Frequency: 2.4-2.4835GHz Features: Portable, Stable Signal, Music Receiver, Wireless Length: 3cm/1.18" (Approx.) Width: 1.8cm/0.71" (Approx.) Thickness: 0.7cm/0.28" (Approx.) Notes: Due to the light and screen setting difference, the itemand 39;s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x USB bluetooth-compatible Adapter 1 x CD (Laptop Not Included) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia