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Black open-ear wireless headphones with charging case

Tronsmart

Tronsmart OpenFly 2 Pro Open-Ear Headphones Bluetooth 5.3 40Hr IPX5 Black

SKU CH-T7QD-54CPV

Open-ear headphones with 12 mm drivers, Bluetooth 5.3, 40-hour total battery and IPX5 water resistance

  • TypeHeadphones
  • ColorBlack
  • Driver Unit12 mm
  • Frequency Response20 Hz - 20 kHz
  • THD=1%
  • Input Impedance32 O

text OpenFly 2 Pro

  • Open-ear design keeps you aware of surroundings
  • 12 mm biomaterial driver with SoundPulse delivers deep bass
  • 4-microphone AI algorithm ensures clear calls in noise
  • 10 hours playback per charge, 40 hours with case
  • Bluetooth 5.3 provides stable connection over 33 feet

Open-Ear Fit for Extended Wear

Tronsmart OpenFly 2 Pro headphones sit outside the ear canal using skin-friendly materials for a secure, lightweight fit. The open-ear design avoids earwax buildup and hearing fatigue while keeping you aware of traffic or announcements during workouts or commutes. Weighing 0.084 lb, they stay comfortable through long sessions without the pressure of in-ear tips.

Sustained Playback and Stable Connection

A single charge provides 10 hours of continuous playback, and the charging case extends total listening time to 40 hours. Bluetooth 5.3 maintains a stable link beyond 10 meters or 33 feet, so audio does not drop when the phone stays in a bag or locker. Recharging the buds takes 1.5 hours and the case reaches full capacity in 2 hours, minimising downtime between long training days.

IPX5 Build and AI Call Clarity

An IPX5 rating protects the internals from sweat and rain during outdoor runs or gym sessions. Four microphones with an AI algorithm isolate your voice from wind and background noise for clear calls in busy environments. The USB-C dongle adds a simple wireless option for devices without native Bluetooth, while the open frame lets ambient sound pass naturally without electronic transparency modes.

Highlights

  • Open-ear design keeps you aware of surroundings
  • 12 mm biomaterial driver with SoundPulse delivers deep bass
  • 4-microphone AI algorithm ensures clear calls in noise
  • 10 hours playback per charge, 40 hours with case
  • Bluetooth 5.3 provides stable connection over 33 feet

Specifications

BrandTronsmart
SeriesOpenFly 2 Pro
ModelOpenFly 2 Pro
Part NumberTS2427
TypeHeadphones
ColorBlack
Driver Unit12 mm
Frequency Response20 Hz - 20 kHz
THD=1%
Input Impedance32 O
Signal to Noise Ratio(SNR)=95 dB
Power SupplyBattery
Sensitivity105 dB ± 3dB
ConnectorWireless
Ear CouplingOpen-Ear
Cord LengthNO
Weight0.084 lb
Noise CancellingPassive Sound Isolation
Wireless TypeBluetooth 5.3
Battery40 h
Operating Time40 h
Charge Time2 h (Case), 1.5 h (Earbuds)
Distance33 ft
Contains Embedded BatteryYes
Microphone Impedance2.2 kO
Microphone Frequency Response100 Hz - 10 kHz
Microphone Signal to Noise Ratio(SNR)=60 dB
Microphone Sensitivity-42 dBFS
CompatibilityiOS, Android, Windows, MacOS
FeaturesOpen-Ear, Sound Leakage Reduction, IPX5 Waterproof, 4-Mic AI Call, 12mm Driver, 40H Playtime
Windows VistaNO
Package ContentsOpenFly 2 Pro Earbuds, Charging Case, USB-C Charging Cable, User Manual

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Questions about this item

How warm do the OpenFly 2 Pro earpieces get after wearing them for a full 10-hour shift?

The open-ear design leaves the ear canals uncovered so heat cannot build up inside; the skin-friendly material stays at skin temperature even during all-day use.

What must I already own to use the included USB-C dongle for audio?

A device with a USB-C port that supports digital audio output — such as a laptop, tablet or recent smartphone — is required for the dongle to function.

Will the headphones maintain a stable link with my older laptop that only has Bluetooth 5.3?

Yes — both the earbuds and the dongle use Bluetooth 5.3, so they pair and hold a connection over 10 metres with any host that also implements Bluetooth 5.3.

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