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Contents
Powering on
Pairing mode
Charging
Earbuds charging 
Case charging
Controls
Reset
Clearing all pairings
Troubleshooting
| Problem | Reason | Solutions |
| Does not power on / Does not respond | Battery is low | Charge the earphones for 2 - 3 hours and restart the earphones |
| No sound after pairing | Incorrect pairing | Pair the earphones again or reset the earphones |
| Turns off automatically | Battery is low | Charge the earphones for 2-3 hours |
| Failing to charge | Error with power supply | Perform a hardware reset |
| No light on the case during charging | Error with power supply | Check that the charging cable is plugged in. Ensure that the wall switch is on using a wall charger. |
| Hearing an echo | Volume is too loud or the environment is too noisy | Adjust the volume or change your location |
| Noise in-call / Sound occasionally drops | Noisy environment or distance between earphones and mobile phone is too far | Change your location or bring your earphones and mobile phone closer together |
| Sound is too soft | Low volume | Increase the volume |
| Pairing unsuccessful / Only one side has sound / Cannot find the pairing name on the device / Mono pairing unsuccessful | Too many pairing records or not paired properly | Remove at least one paired device, reset and reconnect the earphones |
| Earphones don't power on after removing from the charging case | Charging case is low in battery | Charge the earphones and the charging case for 2-3 hours |
Specifications
Nokia Essential True Wireless Earphones E3511
Wearing style: True wireless earphones
Ear coupling: Ear canal
Frequency response: 20Hz to 20kHz
Transducer principle: Dynamic driver
Transducer size: 10mm
Sound pressure level(SPL): 102dB±3dB
Impedance: 32Ω
Microphone principle: MEMS x 2
Power supply: Built-in Lithium rechargable batteries
Left earbud: 45mAh/3.7V
Right earbud: 45mAh/3.7V
Charging case: 350mAh/3.8V
Operating time: 6.5hrs with ANC off, 4.5hrs with ANC on (music playback via A2DP) with rechargeable batteries of the earphones* 25hrs with ANC off, 17hrs with ANC on with rechargeable battery of the charging case*
Charging time: Earphones: approx. 2hrs Charging case: approx. 2hrs
Ingress protection (earbuds): Anti-dust and splash proof (IP44)
Weight: Left earbud; approx. 4g Right earbud; approx. 4g Charging case; approx. 40g
Volume control: Yes
Bluetooth
Version: Bluetooth specification version 5.2
Profiles: HSP, HFP, AVRCP, A2DP
Effective range: Line of sight approx. 30ft(10m)
Transmission frequency: 2402MHz to 2480MHz
Output power: 3mW (max.)
Supported audio format(s): SBC
* Charging case that holds multiple charges for having the total play time. Battery life depends on device settings, environment, usage and many other factors.
VideosNokia E3511 Review Video
Documents / ResourcesDownload manual
Here you can download full pdf version of manual, it may contain additional safety instructions, warranty information, FCC rules, etc.
Download Nokia E3511 - Essential True Wireless Earphones Manual
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