ANKER SoundCore Spirit Dot 2 A3904



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Thumping Bass: Spirit Dot 2’s composite driver is surrounded by an elastic, bass-maximizing material to increase bass output by up to 100%.
Fully Sweatproof and Waterproof: Spirit Dot 2 true wireless earbuds boast IPX7-rated protection that’s strengthened by exclusive SweatGuard technology
Zero-Pressure AirWings: Our unique hollow AirWings have a flexible, soft silicone build that partially deflates to conform to the shape and size of your ears for a secure fit with unmatched comfort.
Compact Fit: Spirit Dot 2 true wireless earbuds are ultra-small and 20% slimmer* to ensure they fit comfortably and discreetly in your ears
MCSync True-Wireless Connection Technology: Latency is reduced by up to 30% and you’re able to switch between using two earbuds or a single one effortlessly.

Key Features

Composite Drivers: Extend high and low frequencies to reproduce sound with stunning clarity and thumping bass.

BassUp Technology: Exclusive technology conducts real-time analysis and enhancement of your audio’s bass frequencies to add powerful sonic punch.

IPX7 Waterproof and SweatGuard: Spirit Dot 2 true wireless earbuds are protected by an ultra-waterproof casing that’s so strong, not even sweat vapor can penetrate it.

Comfortable and Secure Fit: Our unique AirWings have been custom-designed using ultra-soft silicone to fit virtually any ear.

Up to 16 Hours of Playtime: 5.5 hours of playtime on a single charge is extended to 16 hours with the charging case.

Fast-Charging: A 10-minute charge will give you an hour of listening.

Mono or Stereo: Each earbud individually connects to your device for lower latency and seamless switching between using a single earbud or both.

Stable Connectivity: An LDS antenna and Bluetooth 5 work together to create a stable link between your wireless earbuds and device.

One-Step Pairing: Spirit Dot 2 true wireless earbuds use our PUSH AND GO technology for straightforward set up and to automatically connect with the last paired device.

Touch Control: Use to play/pause music, answer calls, or activate your device’s voice assistant.


These true wireless earbuds have an IPX7 Waterproof rating under IEC standard 60529, which means they are designed to handle rain and workout conditions. The earbuds are not designed for swimming, showering, or exposure to pool or ocean water. Do not wear the earbuds in a sauna or steam room.

The waterproof function’s effectiveness may reduce over time as a result of daily use.

The charging case is not waterproof.


Model: A3904

Audio Sensitivity: 97db SPL

Frequency: 20Hz-20kHz

THD+N: <= 1%

LDS Antenna Return Loss: Typical: -14dB Limit :-12dB

Microphone: MEMS Omnidirectional Mic

Audio Source: iPhone, iPad, Samsung, Blackberry, Nexus, Smartphone, Computer, PC, Notebook, MP4, MP3, and more.

Proprietary Technology: BassUp, SweatGuard, MCSync Bluetooth Technology

What’s In The Box

Spirit Dot 2 True Wireless Earbuds and Compact Charging Case

XS/S/M/L/XL EarTips

S/M/L AirWings

USB-C Cable


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