วิธีต่อให้ลำโพงบลูทูธดังพร้อมกัน 2 ตัวง่ายๆ งบ 200 บาท C31 Wireless transmitter

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แต่รอนานมาก ประมาณ 14 วัน https://shopee.co.th/product/12972217...

The Bluetooth transmitter makes everything Bluetooth-enabled, lets you enjoy the fun of wireless, and can be paired with Bluetooth receivers (such as 2 headsets) simultaneously.
Turn on the switch, the A / B blue light flashes, after the connection is successful, the blue light is always on, and the working status can be seen at a glance.
This Bluetooth audio adapter makes your TVs and other Bluetooth-enabled devices stream audio to your Bluetooth headphones.
Low latency for clear fidelity stereo sound, lag-free content streaming in streamer e, giving you a richer and deeper sound experience. Plug and play.
With a built-in 300mAh rechargeable battery, it only takes 1-2 hours to fully charge and runs for 6 hours.

Name: Bluetooth adapter
Bluetooth version: Bluetooth V5.0
Working frequency 2.402G -2.480G
Charging voltage: DC 5V
Bluetooth protocol: 5.0 EDR, A2DP, HSP, AVRCP
Bluetooth compatible distance: 10m (open area)
Output connection e: AUX 3.5mm
Material:plastic
colour:black