product features:

★CSR chip is adopted, which truly conforms to Bluetooth 4.0 technical specification and dual-mode transmission.
★Longer transmission distance: 20m long transmission distance (no barrier), strong signal.
★More stable transmission rate: 3Mbps transmission rate, providing high-speed file and audio data transmission.
★CSR Harmony driver management software is easy to use, powerful, and supports multiple application extensions (Microsoft Office software).
★Ultra-low latency fast link, intelligent sleep wake-up energy saving, 24-bit CRC check to resist interference, Adaptive Frequency Hopping to reduce crosstalk.
★Fully backward compatible with Bluetooth 2.0, Bluetooth 2.1, and Bluetooth 3.0 specifications.
★The USB 2.0 interface is more common, with a super mini body of portable portable.

Weight with package: 20g

packing size: 11*13 * 1cm

packing quantity: 500PCs

packing size: 53*38 * 33cm