Red Lemon True Wireless Earbuds T500 User Manual

Red Lemon True Wireless Earbuds T500 User Manual

Dear Red Lemon User,

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If you encounter any problems in the using product, please refer to service process. Your support is our strongest power, also your recognition and evaluation are a great encouragement to Red Lemon. Thank you!

Red Lemon sales team


Thank you for purchasing the model Red Lemon True Wireless Sport Earbuds. Pls read this manual before use.

Bluetooth wireless communications Technology introduction

Bluetooth is a kind of wireless technology which support short distance communications (work normally within a distance of 10M) with it you can exchange information by wireless between many IT digital devices like mobile phones / wireless earphones / computers ect. Bluetooth technology effectively and simplify to the communications which makes device and data transmission quickly and off effectively.

Accessories List

  • 2X Bluetooth Earphones
  • 1X User Manual
  • 1X Portable Charging Case
  • 1X USB Charging Cable

Red Lemon True Wireless Earbuds T500 - Accessories List

Overview Of Headset

Red Lemon True Wireless Earbuds T500 - Overview Of Headset

How To Use

User Manual

Power on: Take out earbuds from charging bin to turn on.
Power off: Put earbuds into the charging bin, they would turn off automatically.


Single earbud connection

  1. Take out one of earbud from the charging bin. Then long press the MFB until the red and white lights flash alternately.
  2. Turn on your phone Bluetooth device to search “RL-T500” and connect. When the phone connected successfully, the white light will flash and will hear the prompt voice “Connected”.

Double earbuds connection

  1. Take out the two earbuds from the charging bin, after automatically turn on, the right will automatically connect to the left, After the right connect to the left, The left and right earbuds with “Connected”, “Left channel, “Right channel” prompt tone, the LED indicator flashes red and white;(The earbud is on the search state. Then you can open Bluetooth of your cell phone or other devices to connect.)
  2. Open your phone or other devices, mobile phone to search “RL-T500” and pair. (Pair and connect. You will hear “Second device connected” when pairing is complete.)
  3. Re-connection: It will be connected the paired mobile phone automatically while power on.(the premise is that the Bluetooth on the phone is open, and the Bluetooth does not clear the matching record with the device)


  1. This two earbuds has been paired at the factory. So when you receive the headsets (two), you just need to take out the earbuds from the charging case.
  2. If you need to reconnect the earphone by yourself, long press MFB button of both earbuds until the red & white light flash alternately. After the earbuds paired successfully, the white light will flash slowly. After few seconds, one of the earbud flash red & white light alternately to connect the phone. (If the pairing isn’t successful, please put the earbuds back to charging bin to reset operation and then operate again).
  3. In TWS mode, when one of earbud battery low, both of them will automatically turn off. Or the Bluetooth device stop connection within 5 minutes, the earbuds will turn off automatically).

If one of the earbud doesn’t work, please turn off the Bluetooth device of the phone, put back earbuds into the charging bin firstly, then take two earbuds out of the charger and keep them turn on, then press once for each earbuds. after that it will flash red & white lights 1 to 10 seconds, two earbuds paired successfully, and then the white light flashes only. Repeat step 1 and step 2 to reconnect with phone.

Button Definition
  1. Answer incoming call: Click the MFB
  2. Reject incoming call: Long press the MFB for 2 seconds
  3. Hang up the phone: Click the MFB
  4. Last number redial: Click the MFB twice, the prompt voice “Redialing”
  5. Play: Click the MFB
  6. Pause: Click the MFB
Status lights
  1. Earbuds
    Charging, the red light steady; Full charge, the light die out; Pairing, the red and white light blinking;
  2. Charging Case
    When your case is plugged into a charge cable for charging , you will see charging lights.
    When charging, the red light slow blinking; Full charge, the red light steady; Low battery, the blue light flash slowly; During discharge, the blue light steady.
Products Features
  1. Waterproof IPX4 Level, Sweat-proof.
  2. 2 in 1 Bluetooth earbuds with power bank, long standby time.
  3. The stylish portable charging pod support 4 full charges for earbuds.
  4. V5.0 chip, low power consumption, super compatibility.
  5. Hands-free function.
  6. True double-ear wireless, You can use by single or a pair.


Bluetooth Specifications

  • Bluetooth Version: V5.0
  • Profile Support: HSP/ HFP/ A2DP/ AVRCP
  • Stand-by Time: 180 h
  • Talk Time: 3 h
  • Music Play Time: 2 h
  • Charging Time: 1 h
  • Charging Voltage: DC 5V
  • Frequency Range: 2.402G-2.480G
  • Ambient Temperature: -20/+60℃
  • Transmission Distance: 10m
  • Earbuds Battery Capacity:40mAh / 3.7V
  • Charging Case Battery Capacity:360mAh / 3.7V

Driver Specification

  • Driver Unit:6mm
  • Sensitivity:92dB ± 3dB
  • Impedance:16Ω ± 15%
  • Frequency Response:20-20000Hz

Safety And Maintenance

Please read below suggestions in order to helping prolong the product lifespan and clearly understand the warranty clauses.

  • Keep the product dry, do not put it in humid circumstance to avoid short circuit.
  • Do not expose it to the sun or high heat, High heating will short lifespan of electronic components, damage battery and deform some plastic parts.
  • Do not put it in cold circumstance to avoid damage to PCB board.
  • Do not attempt to take apart the product, especially non-professionals.
  • Do not fall, vibrate strongly, strike with hard objects, to avoid damage to inner electronic circuit.
  • Do not use high chemical products, detergent to clean the item.
  • Do not scratch the surface with sharp items to avert damaging the case and appearance.
  • Do not make it charging than 10 hours continuously for the sake of lifespan.

If the product can not work properly, please send it to Red Lemon authorized maintenance agents. Our staff will help to solve the problems for you.

Statement: In order to improve product performance we will upgrade products, the content may change without notice, pls forgive! Thank you for your purchase.

Warranty Terms & Conditions

Red Lemon True Wireless Earbuds T500 - Warranty Terms & Conditions

Red Lemon Company

@ 2018 Red Lemon All rights reserved. Re Lemon, is The trademark of Encon Impex Pvt Ltd registered in India, Counterfeit will investigate!

Customer service hotline:
Encon Impex Pvt Ltd, #45, 2nd Floor,
Vinayaka Electronic Plaza, 1st Cross,
SP Road, Bengaluru, Karnataka – 560002, INDIA |
Tel. +91-80-43944439

For more information please visit:

WhatsApp: +91-99725 15544

Red Lemon True Wireless Earbuds T500 User Manual – Optimized PDF
Red Lemon True Wireless Earbuds T500 User Manual – Original PDF

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