Tronsmart OpenFly 2 Pro TWS Bluetooth 5.3 Open-Ear Wireless Earbuds - Black

Description

The Tronsmart OpenFly 2 Pro earbuds mark a major technological breakthrough in the open-mode wireless audio transmission equipment market. Intended for mobile equipment retailers, outdoor accessory specialists, and B2B distributors of high-tech solutions, this model addresses a growing health and safety issue. By completely avoiding in-ear insertion, these earbuds eliminate mechanical pressure on the ear canal and the associated bacterial proliferation, while allowing the technician, delivery driver, or athlete to maintain total auditory vigilance regarding surrounding noises (road traffic, machine alerts, direct conversations).

The acoustic engineering of the OpenFly 2 Pro relies on 12mm drivers equipped with a high-reactivity bio-cellulose composite membrane, ideal for reproducing optimal vocal clarity. To compensate for the loss of bass inherent in open architectures, Tronsmart simultaneously deploys its SoundPulse® digital equalisation algorithm and its patented abTube™ Sound Balance technology. This hardware innovation uses precision acoustic waveguides to concentrate and direct the airflow directly towards the tympanic membrane, thereby minimising lateral sound dispersion and protecting the confidentiality of conversations. The chassis is made of rigid polymers combined with flexible memory-shape ear hooks, the whole being treated to meet the IPX5 water resistance standard against water, sweat, and dust aggression.

Wireless connectivity is driven by a Bluetooth 5.3 controller stable up to an operating range of 10 metres, compatible with AAC and SBC audio profiles seamlessly under iOS and Android environments. The external faces integrate capacitive touch control zones for friction-free management of calls, volume, and the voice assistant. For communication, a combined matrix of 4 microphones is coupled to an AI ENC noise cancellation DSP processor capable of actively filtering up to 90% of environmental disturbances (wind, urban noise). The carrying case acts as an intelligent charging station, extending the total battery life to 40 hours thanks to a modern electronic fast-charging circuit via USB-C port.

Technical Specifications

• Manufacturer reference: OpenFly 2 Pro (1255823)
• Technology / Material: ABS plastic chassis, soft silicone ear hooks, 12mm bio-cellulose drivers
• Compatibility: Universal (iOS, Android, Windows, macOS via Bluetooth 5.3 connection)
• Dimensions: Earbuds: 34 x 52 x 15.8 mm / Charging case: 76.3 x 61.5 x 25 mm
• Weight: 8.8 grams per earbud / 74.5 grams with the charging case
• Power / Standards: Built-in rechargeable battery, USB-C input, IPX5 Certification
• Battery life: Up to 10 hours per earbud (40 hours cumulative with the case)
• Full charge time: Earbuds ≤ 1.5 h / Charging case ≈ 2 h

Workshop Advice & Usage

As a professional or after-sales advisor, it is imperative to explain to the end-user the acoustic behaviour specific to open-ear type earbuds to avoid unjustified returns due to a "lack of power". Not being sealed in the ear, the sensation of volume and passive isolation are absent, which is a nominal safety feature and not a technical defect of the amplifier. Furthermore, during a workshop diagnosis of a charging fault or a synchronisation loss of one of the earbuds, oxidation of the brass charging pins by sweat or debris is the main cause of failure. We recommend meticulous cleaning of the physical contact surfaces (located on the body of the earbud and at the bottom of the case slots) using a neutral solvent such as 99% isopropyl alcohol to instantly restore the electrical operation of the charging cells.