What's in the box:

ZF-380 2 in 1 Bluetooth 5.0 Transmitter Receiver TV Speaker 3.5mm AUX Optical Adapter Audio Music Wireless Transmitter Receiver for PC TV Car Headphones Wireless Adapter (Standard)

Features:
Transmitter mode: Wirelessly transfer audio from your non-BT TV, home stereo system, or CD player to your BT headphones or speakers.
Receiver mode: Wirelessly transfer audio from your BT-enabled phone, tablet, or computer to your wired stereo, speakers, or headphones.
BT 5.0 technology has lower power consumption and more stable signal transmission. Support 10M long-distance stable transmission, barrier-free connection between living room and room.
Receiver transmitter mode two in one, one key to switch. Working indicator, working status is clear at a glance.
Support optical fiber interface and 3.5 mm AUX interface, which can be connected to TV, computer, mobile phone, power amplifier and other equipment to realize wireless transmission.
Built-in 300mAh rechargeable battery, long battery life; Small and exquisite appearance, strong and durable, easy to carry.

Specifications:
Model: ZF-380
Item Type: Audio Transmitter Receiver
Material: ABS
Color: Black
BT Version: V5.0
Battery capacity: 3.7V/300mAh
Audio interface: Aux&Optical
Frequency range: 2.402GHz-2.480GHz
Transmission distance: About 10m
Item Size: 64*64*18mm
Package Size: 12 * 10 * 5.5cm / 4.7 * 3.9 * 2.2in
Package Weight: 155g / 5.5oz

Package List:
1 * Audio Transmitter Receiver
1 * Optical Cable
1 * 3.5mm Audio Cable
1 * USB Charging Cable
1 * 3.5mm to 2 RCA Cable
1 * User Manual