FiiO Bluetooth amplifier. 2.5mm jack, 3.5mm jack, and Bluetooth connection have been tested and confirmed to be working. A USB charging cable will be included. Everything in the photos is included. ■ Sent via anonymous delivery, with free shipping. ■ No comments are needed before purchase. ■ Please note that we do not accept price negotiations. ■ Used and stored in a smoke-free and pet-free environment. The item will be placed in a plastic bag, wrapped in cushioning material, and then shipped. ーーーーー 【High-Quality Bluetooth Connection】 The FiiO BTR3K supports Qualcomm aptX HD and LDAC, providing a high-quality music experience wirelessly. nu 【Compact Design】 Lightweight design of approximately 123.5g, making it convenient to carry. Dimensions are 58 x 25 x 13mm, easily fitting in your pocket. 【Multi-functionality】 As a Bluetooth headphone amplifier, it can connect to various devices. An ideal choice for improving sound quality. - Brand: FiiO - Model Name: BTR3K - Type: Bluetooth Headphone Amplifier - Weight: Approximately 123.5g - Dimensions: Approximately 58 x 25 x 13mm - Supported Codecs: Qualcomm aptX HD, LDAC, SBC The FiiO BTR3K supports Qualcomm aptX HD and LDAC, providing a high-quality music experience wirelessly.