USAMS Echo E02 ANC + ENC TWS In-Ear Earbuds – 4H Play, 300mAh Case, White

The USAMS Echo E02 are ANC and ENC TWS in-ear earbuds in ABS. Bluetooth version: 5.3. Colour: White. Driver: large dynamic driver as described in source — driver diameter not specified in source documentation. Earbud battery: 35mAh. Playback time: approximately 4 hours. Call time: approximately 3 hours. Earbud charge time: approximately 1 hour. Case battery: 300mAh. Case charge time: approximately 2 hours. Input: 5V/0.2A. Case size: 60.6×47.9×26.5mm. Total weight: approximately 40g. ANC (Active Noise Cancellation) and ENC (Environmental Noise Cancellation) both featured. ANC depth rating not specified in source. No charging cable is included in the package. No certifications listed. Package: pair of earbuds, charging case, and English user manual. Curated by Aetheo.

Why you'll like it

• ANC — Active Noise Cancellation reduces ambient sound during listening
• ENC — Environmental Noise Cancellation on the microphone for clearer calls
• 4 hours of wireless playback per earbud charge — with 300mAh charging case
• Bluetooth 5.3 — stable connection for both earbuds independently
• Compact charging case — 60.6×47.9×26.5mm, approximately 40g

Designed for ANC wireless TWS listening

The Echo E02 connects via Bluetooth 5.3 to smartphones, tablets, and other Bluetooth-enabled devices. ANC (Active Noise Cancellation) uses onboard electronics to reduce ambient background noise during listening — the ANC depth rating (in dB) is not specified in source documentation. ENC (Environmental Noise Cancellation) operates on the microphone signal during calls, reducing background noise picked up by the microphone. These are two separate technologies: ANC addresses playback isolation; ENC addresses call clarity. Both features are listed in the source. Driver diameter is described as a large dynamic driver in source bullet points — the specific diameter measurement is not listed in source documentation. The in-ear design provides physical isolation at the ear canal through the eartip seal. Each earbud has a 35mAh battery providing approximately 4 hours of playback or approximately 3 hours of call time; the earbuds recharge from the 300mAh case in approximately 1 hour. The case charges via the included 5V/0.2A input in approximately 2 hours — no charging cable is included in the package; the case connector type is not specified in source documentation. No certifications are listed in source. Curated by Aetheo.

Key features

ANC — Active Noise Cancellation for ambient reduction during listening

The Echo E02 uses Active Noise Cancellation (ANC) to electronically reduce ambient background noise during playback. ANC works by using microphones on the earbuds to sample ambient sound and generate an inverse signal to cancel it — this is most effective on steady-frequency noise such as engine hum, air conditioning, and transport noise. The ANC depth rating (dB of reduction) is not specified in source documentation. ANC is distinct from passive isolation — passive isolation comes from the in-ear eartip seal and is present regardless of ANC mode. ANC may reduce battery life compared to ANC-off operation — the specified 4-hour playtime applies to normal use; ANC-on playtime is not listed separately.

ENC — Environmental Noise Cancellation for clearer calls

ENC (Environmental Noise Cancellation) is applied to the microphone signal during calls, reducing background ambient noise captured by the earbuds' built-in microphone. ENC improves call clarity for the receiving party by filtering non-voice environmental sounds from the microphone output. ENC does not affect playback isolation — it operates on the outbound microphone signal only. Microphone sensitivity and specification are not listed in source documentation. The combination of ANC (for listener isolation) and ENC (for call clarity) operates as a dual-mode noise reduction system as described in source documentation.

35mAh earbud battery — 300mAh case — compact at 60.6×47.9×26.5mm

Each earbud has a 35mAh battery providing approximately 4 hours of playback or approximately 3 hours of call time. The earbuds recharge from the 300mAh charging case in approximately 1 hour. The case charges at 5V/0.2A in approximately 2 hours — no charging cable is included in the package; the case connector type (USB-C, Micro-USB) is not specified in source documentation. The case measures 60.6×47.9×26.5mm and the total assembly (earbuds and case) weighs approximately 40g. Total combined playtime across earbuds and case charges is not specified in source documentation.

Best for

• ANC noise reduction — active ambient cancellation for focused listening
• Clear calls — ENC microphone noise cancellation for call environments
• Compact TWS earbuds — ~40g total, 60.6×47.9×26.5mm case
• 4 hours per charge — wireless playback with 30