1. ບົດແນະນຳ
Welcome to the user manual for your Sennheiser CX 120BT Wireless Bluetooth In-Ear Neckband Headphones. This guide provides essential information for setting up, operating, maintaining, and troubleshooting your device. Please read these instructions carefully to ensure optimal performance and longevity of your headphones.
The CX 120BT headphones offer high-quality audio with aptX and SBC codec support, including aptX Low Latency for synchronized sound. Featuring Bluetooth 4.1 technology, a 6-hour battery life, and an intuitive three-button remote, these headphones are designed for comfort and convenience.
2. ຂໍ້ມູນຄວາມປອດໄພ
To prevent damage to your hearing or the device, please observe the following safety instructions:
- ການປ້ອງກັນການໄດ້ຍິນ: ຫຼີກເວັ້ນການຟັງໃນລະດັບສຽງສູງສໍາລັບໄລຍະເວລາທີ່ຂະຫຍາຍອອກໄປເພື່ອປ້ອງກັນຄວາມເສຍຫາຍຂອງການໄດ້ຍິນ.
- ຄວາມປອດໄພຫມໍ້ໄຟ: Do not expose the battery to excessive heat, direct sunlight, or fire. Do not disassemble or modify the battery.
- ຄວາມຕ້ານທານນ້ໍາ: ຫູຟັງເຫຼົ່ານີ້ແມ່ນ ບໍ່ທົນທານຕໍ່ນ້ໍາ. ຫຼີກເວັ້ນການສໍາຜັດກັບຝົນ, ຄວາມຊຸ່ມ, ຫຼືຂອງແຫຼວ.
- ທໍາຄວາມສະອາດ: Clean the headphones only with a soft, dry cloth. Do not use liquid cleaners.
- ອັນຕະລາຍຕໍ່ເນື່ອງ Keep the headphones and accessories out of reach of small children and pets to prevent choking hazards.
3. ເນື້ອໃນຊຸດ
ກວດສອບວ່າຊຸດຂອງທ່ານມີລາຍການດັ່ງຕໍ່ໄປນີ້:
- Sennheiser CX 120BT earphones
- Three interchangeable ear tip sizes (S, M, L)
- USB charging cable (Micro USB)
4. ຜະລິດຕະພັນເກີນview
The Sennheiser CX 120BT features an ergonomic neckband design with in-ear earbuds and an integrated three-button remote for easy control.

ຮູບທີ 4.1: ເກີນview of the Sennheiser CX 120BT headphones, showing the neckband, earbuds, and the integrated three-button remote control.

ຮູບທີ 4.2: ໃກ້ຊິດ view of an earbud, highlighting the design and the interchangeable ear tip for a customized fit.
5. ຕັ້ງຄ່າ
5.1 ການສາກຫູຟັງ
Before first use, fully charge the headphones. A full charge provides approximately 6 hours of battery life. Charging takes about 1.5 hours.
- Locate the micro USB charging port on the control unit.
- Connect the supplied micro USB cable to the charging port.
- Connect the other end of the USB cable to a USB power source (e.g., computer USB port or USB wall adapter).
- ໄຟ LED ຈະສະແດງສະຖານະການສາກໄຟ. ໂດຍປົກກະຕິແລ້ວມັນຈະດັບລົງ ຫຼື ປ່ຽນສີເມື່ອສາກເຕັມແລ້ວ.
5.2 ການຈັບຄູ່ກັບອຸປະກອນ Bluetooth
The CX 120BT uses Bluetooth 4.1 for wireless connectivity. Follow these steps to pair your headphones with a new device:
- ກວດໃຫ້ແນ່ໃຈວ່າປິດຫູຟັງແລ້ວ.
- Press and hold the multi-function button (usually the center button on the remote) for approximately 5-7 seconds until the LED indicator flashes blue and red alternately. This indicates pairing mode.
- ໃນອຸປະກອນ Bluetooth ຂອງທ່ານ (ໂທລະສັບສະຫຼາດ, ແທັບເລັດ, ຄອມພິວເຕີ), ໄປທີ່ການຕັ້ງຄ່າ Bluetooth ແລະເປີດໃຊ້ງານ Bluetooth.
- ຊອກຫາ available devices. You should see "CX 120BT" in the list.
- Select "CX 120BT" to connect. If prompted for a passcode, enter "0000" (four zeros).
- Once successfully paired, the LED indicator will flash blue periodically, and you will hear an audible confirmation.
The headphones will automatically attempt to reconnect to the last paired device when turned on.
6. ຄໍາແນະນໍາການດໍາເນີນງານ
6.1 ການໃສ່ຫູຟັງ
For optimal sound quality and comfort, select the correct ear tip size and position the neckband correctly.
- Choose the ear tips that provide a secure and comfortable fit in your ear canal. Experiment with the three included sizes (S, M, L).
- Place the neckband around your neck, allowing the earbuds to rest comfortably in your ears. The ergonomic design ensures a secure fit.

ຮູບທີ 6.1: Example of wearing the CX 120BT headphones with the neckband resting comfortably.
6.2 Using the Three-Button Remote
The integrated three-button remote allows for easy control of music playback and calls.
- Center Button (Multi-function):
- ກົດຄັ້ງດຽວ: ຫຼິ້ນ/ຢຸດເພງ, ຮັບສາຍ/ວາງສາຍ.
- ກົດສອງຄັ້ງ: ເພງຕໍ່ໄປ.
- ກົດສາມເທື່ອ: ເພງກ່ອນໜ້ານີ້.
- Press and hold (approx. 2 seconds): Reject call, Activate voice assistant.
- Press and hold (approx. 5-7 seconds from off): Enter pairing mode.
- ປຸ່ມເພີ່ມສຽງຂຶ້ນ (+):
- ກົດຄັ້ງດຽວ: ເພີ່ມລະດັບສຽງ.
- ປຸ່ມປະລິມານລົງ (-):
- ກົດຄັ້ງດຽວ: ຫຼຸດລະດັບສຽງລົງ.
7. ການບໍາລຸງຮັກສາແລະການດູແລ
Proper care ensures the longevity and performance of your CX 120BT headphones.
- ທໍາຄວາມສະອາດ: Regularly clean the earbuds and ear tips with a soft, dry, lint-free cloth. Remove ear tips and clean them separately with mild soap and water if necessary, ensuring they are completely dry before reattaching.
- ການເກັບຮັກສາ: When not in use, store the headphones in a clean, dry place, away from extreme temperatures and direct sunlight.
- ຫຼີກເວັ້ນຄວາມຊຸ່ມ: As the headphones are not water resistant, protect them from sweat, rain, and other liquids.
- ການດູແລສາຍໄຟ: Avoid sharp bends or excessive pulling on the cables to prevent internal damage.
8. ການແກ້ໄຂບັນຫາ
If you encounter issues with your CX 120BT headphones, refer to the following common solutions:
| ບັນຫາ | ສາເຫດທີ່ເປັນໄປໄດ້ | ການແກ້ໄຂ |
|---|---|---|
| ຫູຟັງບໍ່ເປີດ | ແບັດເຕີຣີໝົດ. | ສາກຫູຟັງຢ່າງໜ້ອຍ 1.5 ຊົ່ວໂມງ. |
| ບໍ່ສາມາດຈັບຄູ່ກັບອຸປະກອນໄດ້ | Headphones not in pairing mode; device's Bluetooth off; too many paired devices. | Ensure headphones are in pairing mode (flashing blue/red). Turn on Bluetooth on your device. Forget previous pairings on your device and try again. |
| ບໍ່ມີສຽງຫລືປະລິມານຕ່ ຳ | ລະດັບສຽງຕໍ່າເກີນໄປໃນຫູຟັງ ຫຼື ອຸປະກອນ; ບໍ່ໄດ້ເຊື່ອມຕໍ່ຫູຟັງ; ມີບັນຫາແຫຼ່ງສຽງ. | Increase volume on both headphones and connected device. Ensure headphones are properly connected. Check audio source. |
| ການເຊື່ອມຕໍ່ແບບບໍ່ຢຸດຢັ້ງ | ໄລຍະຫ່າງຈາກອຸປະກອນ; ການແຊກແຊງ; ແບັດເຕີຣີຕໍ່າ. | Keep headphones within Bluetooth range (typically 10 meters). Avoid strong Wi-Fi signals or other Bluetooth devices. Charge headphones. |
9. ຂໍ້ມູນຈໍາເພາະ
| ຍີ່ຫໍ້ | Sennheiser |
| ຊື່ຕົວແບບ | CX 120BT |
| ໝາຍເລກຕົວແບບ | 508967 |
| ການຈັດວາງຫູ | ໃນຫູ |
| ປັດໄຈແບບຟອມ | ໃນຫູ |
| impedance | 28 ໂອມ |
| ລຸ້ນ Bluetooth | 4.1 |
| ເຕັກໂນໂລຊີໄຮ້ສາຍ | Bluetooth |
| ຊີວິດຫມໍ້ໄຟ | ສູງສຸດ 6 ຊົ່ວໂມງ |
| ເວລາສາກໄຟ | Approx. 1.5 hours (via Micro USB) |
| ການຕອບສະໜອງຄວາມຖີ່ | 21000 Hz (upper limit, lower not specified) |
| ການຄວບຄຸມສິ່ງລົບກວນ | ການແຍກສຽງ |
| ປະເພດການຄວບຄຸມ | ການຄວບຄຸມສື່ |
| ອຸປະກອນທີ່ເຂົ້າກັນໄດ້ | All Bluetooth devices |
| ນ້ຳໜັກ | 78 ກຣາມ |
| ລະດັບຄວາມຕ້ານທານນ້ໍາ | ບໍ່ທົນທານຕໍ່ນ້ໍາ |
10. ການຮັບປະກັນແລະການສະຫນັບສະຫນູນ
10.1 ຂໍ້ມູນການຮັບປະກັນ
Your Sennheiser CX 120BT headphones come with a ຮັບປະກັນ 2 ປີ on manufacturing defects, valid when purchased from an authorized seller. Please retain your proof of purchase for warranty claims.
10.2 Manufacturer and Importer Contact
For support or warranty inquiries, please contact:
- ຜູ້ຜະລິດ: Sennheiser electronic GmbH & Co. KG. Am Labor 1. DE - 30900 Wedemark Germany
- ຜູ້ນໍາເຂົ້າ (ອິນເດຍ): Sennheiser Electronics India Private Limited 11A-22, First Floor, Cunningham Road, Municipal No. 60, SRT Road, Bengaluru, Karnataka 560052