Wireless USB Bluetooth Adapter CSR4.0 Bluetooth Dongle Music Sound Receiver Adaptor Bluetooth Transmitter...

Main Features:
● Use CSR8510 chip, truly suitable the technical specifications of bluetooth 4.0, backwards compatible with bluetooth 2.0 / 2.1 / 3.0 version, dual-mode transmission
● Long transmission distance: Up to 20m - 50m transmission distance ( no blocking ), strong signal
● Stable transmission rate: 3 Mbps transfer rate, providing high-speed file, audio data transmission
● CSR-driven management software: CSR Harmony-driven management software easy to use and powerful, supporting multiple application extension
● Ultra-low latency link speed, intelligent wake-up energy-saving, 24-bit CRC checksum against of interference, adaptive frequency hopping to reduce crosstalk
● Low power selectable 1.2 to 3.6 VI / O
● Support multi languages  
Color: Black
Special function: Long transmission distance: Up to 20m - 50m transmission distance ( no blocking ), strong signal 0.026 Package weight: 0.050 kg
Product size (L x W x H): 2.20 x 2.00 x 0.50 cm / 0.87 x 0.79 x 0.2 inches
Package size (L x W x H): 13.00 x 11.00 x 1.50 cm / 5.12 x 4.33 x 0.59 inches Package Contents: 1 x CSR 4.0 Bluetooth Dongle, 1 x CD