LOSEI | D73True Wireless Earbuds D73
USER MANUAL
Customer Service
Email: 
WhatsApp: (+86) 139 2349 0475 Web: www.losei.store
Warning
- To ensure trouble-free operation, please carefully read the user manual first.
- Fully charge both earbuds and charging case when first-time use.
- Prior to first-time charging, please remove the insulating film on the earbuds charging point.
- Do not throw/drop/disassemble/make any modifi cations to the structure or any part of it.
- Please charge with a rated voltage charger.
- Do not replace the built-in batteries of earbuds and charging case.
- Do not expose the product to fire, high temperature, direct sunlight, etc.
Package List
Charging Case x1Type-C Charging Cable x1Ear tips x2Earphones x2User Manual x1
Product Specification
- Model Name: Losei D73
- Bluetooth Version: V5.0
- Support: A2DP/ HFP/ HSP/ AVRCP
- Charging Case Size: 62.5*51.5*27.5mm
- Earbud Size: 25*24*22mm
- Transmission Range: 30 Feet (without Obstacle)
- Music Time: About 7H
- Call Time: About 6H
- Headphone Standby Time: About 100H
- Charging Time: About 2H Headphone
- Battery Capacity: 50mAh
- Charging Case Battery Capacity: 500mAh
Product Overview
How To Wear?
1- Choose suitable ear tips
2- Put on and adjust to the most comfortable position
Charge the Charging Case
1-Charge the case via Type-C cable
2-Wireless charging supported
We recommend you usea wireless charging pad(not included) with a QIcertificate.
Active & Charge the Earbuds
(Before using, make sure both the Earbuds and Charging Case are fully charged. To charge properly, pins need to be well-contacted.)
1-Prior to first-time charging, please remove the insulating film on the earbuds charging point.
2-Put both earbuds into the charging case to activate and charge them.
Power on/Power off
Automatically Power on/offTake out the earbuds from the Charging Case, it will Power On automatically. Put the earbuds back into the Charging Case, it will Power Off automatically.
Manually Power OnTouch and hold one earbud for about 2 seconds to turn on the earbuds. The blue indicator on for 1 second with a prompt sound “power on”.
* Tips: The earbuds will automatically Power Off after 5 minutes ifthe device is not connected. The white indicator on for 1 second with a prompt sound “power off”.
Pairing and Connection
Step 1- Take out the 2 earbuds from the charging case, they will power on and pair with each other automatically.
Step 2- Activate the Bluetooth setting on your phone, search and click”Losei D73″to connect. There should be a voice prompt “connected” if you wear the earbuds.
Single Mode
- When on dual-mode, put one earbud into the charging case.
- Only take one earbud out of the charging case and connect it.
Other Instructions
- Each time you use your earbuds, it will automatically connect to your last successfully connected device.
- The earbuds will automatically power off if without any connections within 5 mins.
- Any issue with pairing, please try the tips on next page to restore factory resetting.
Earbud reset?
When should I reset? When only one side plays music. When you can’t use the two earbuds together. or occur connection-related issues.
How to reset?
1- Deactivate the Bluetooth setting on your phone and forget all “Losei D73” from the menu.2 – Put the 2 earbuds into the charging case, longpress both earbuds for 8 seconds, quick double-tap the 2 earbuds at the same time immediately once blue indicator light is on. (Then if there is solid white light on, that means the reset works.)
3 – Take out the 2 earbuds from the charging case, they will power on and pair with each other automatically.One earbud – Blue and white lights flash alternately. The other earbud – White light flashes twice every 2 seconds.
4 – Now, activate the Bluetooth setting on your phone, search and select “Losei D73” to connect, it should work properly. (If not, please put the earbuds back to the Charging Case and repeat the steps above.)
Touch Control Functions
Q1: Why does the music cut in and out sometimes?A1: 1-Please make sure there is no obstacle between the earbuds and your device.2-Please make sure there is no Microwave oven/ Wifi transmitter around you, which is more likely to produce electromagnetic interference and result in a signal interruption.Note: Please keep the device and the earbuds as closeas possible to ensure a more stable Bluetooth connection.
Q2: Why I can’t get the earbuds charged?A2: 1-You need to remove the plastic protector on the earbuds charging point first.2-Make sure the charging case was fully charged. 3-Or make sure the charging case was plugged into the power supply. Q3: How to contact Losei Customer service? A3: Losei offers a one-year replacement warranty, if there are any issues with your Losei D73, please don’t hesitate to contact us, we will reply within 24 hours and resolve it 100%.
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