Tronsmart Sounfii NC 2 TWS Wireless Earbuds with Active Noise Cancellation (Hybrid ANC) - Black

Description

The Tronsmart Sounfii NC 2 earbuds enter the TWS (True Wireless Stereo) in-ear audio segment with high technological added value, specifically calibrated for mobile accessory retailers, corporate fleet managers, and high-tech sales counters. This model precisely meets the needs of professional nomads, remote workers, and travellers who require high-performance acoustic isolation in open-plan offices or during transit, while maintaining excellent intelligibility during professional phone calls.

The hardware engineering of these earbuds is based on a Hybrid Active Noise Cancellation (Hybrid ANC) system. By combining internal and external microphones, the digital signal processor (DSP) analyses parasitic frequencies to inject a counter-signal capable of reducing background noise by up to 42 decibels. The acoustics are powered by 10 mm composite dynamic drivers that deliver a balanced frequency response with deep bass and crisp highs. The thermo-moulded ABS polymer chassis adopts a stem-based ergonomic design with a sealed architecture certified to the IPX4 standard, effectively protecting components against sweat and multidirectional water splashes.

Wireless connectivity is driven by a Bluetooth 5.3 chip, ensuring superior connection stability, instant initial pairing, and audio transmission latency reduced to its absolute minimum. The external interface supports capacitive touch control zones to easily switch between listening modes (ANC active, ANC disabled, or Transparency mode allowing ambient noise to be reintroduced for safety). The charging case incorporates an intelligent charging circuit powering its internal 500 mAh battery, which allows the 40 mAh cells in the earbuds to be recharged to reach up to 50 hours of total battery life.

Technical Specifications

• Manufacturer Reference: Tronsmart Sounfii NC 2 (Black)
• Technology / Material: ABS polymer chassis, capacitive sensors, 10 mm composite drivers
• Compatibility: Universal (iOS, Android, Windows, macOS via Bluetooth 5.3 connection)
• Dimensions: Not specified by the manufacturer
• Weight: Not specified by the manufacturer
• Power / Standards: USB Type-C charging input (5V / 0.5A), IPX4 Certification
• Battery Capacity: Earbuds: 40 mAh each / Charging case: 500 mAh
• Maximum Battery Life: Up to 10 hours per charge (50 hours cumulative with the charging case)
• ANC Attenuation: Up to -42 dB

Workshop Advice & Usage

As a repairer or technical advisor, you must inform your professional clients that the performance of the Active Noise Cancellation (ANC) depends directly on the passive seal created by the silicone tip in the ear canal. If the user notices an acoustic leak or ineffective attenuation of low frequencies, recommend changing the tip size from the three pairs provided in the original packaging. Regarding maintenance and after-sales service, in the event of a charging fault on one of the earbuds, the problem usually stems from the accumulation of micro-particles of sebum or dust on the brass conductive pins located at the base of the stem or at the bottom of the case wells. We recommend gently cleaning these hardware connectors using a cotton swab very slightly dampened with 99% isopropyl alcohol to restore optimal conductivity.