Air 39 Earbuds ENC Crystal Wireless Earbuds Led Digital Display Transparent

Blue

In the Ear

Yes

Charging Case, User ManualUSB Charging Cable

Bluetooth

Earbud

Additional Earmuffs/EartipsUSB Charging CableUser Manual

Yes

Yes

Yes

Yes

Yes

All Bluetooth

Air 39 Earbuds Blue

Bluetooth

Supraaural

Open/Closed

2.4G

Neodymium or Ferrite

Golden

12 mm

DPS

Battery

Touch Controls: Many modern wireless earbuds come with touch-sensitive controls, allowing you to play/pause music, answer calls, and adjust volume with a simple touch on the earbuds.

Transparent Earbuds

ANC, ENC

Touch Controls: If the headphones offer touch controls, they may allow for easy adjustment of volume, playback, and other settings directly on the ear cups. Clear Call Quality: The clarity of phone calls, especially in noisy environments, can be crucial. If the BT 30 headphones are designed to provide clear call quality, it indicates attention to communication features

12 mm

0.2%

USB Cable

1

Yes

3 mm

80 ohm

Yes

80 dBmW

20 ohm

80 dB

MQZ

200 mW

2000 Hz

20000 Hz

20 dB

HiFi Sound: If the BT 30 headphones are advertised as "HiFi," it suggests a focus on high-fidelity audio, delivering clear, detailed, and balanced sound reproduction. Bass Response: Headphones often vary in their bass response. Some users prefer headphones with enhanced bass for a more impactful low-frequency experience, while others prefer a more neutral or balanced sound.

AAC or aptX

Bluetooth

12 m

A2DP

5.3

15 m

USB Cable

BAttery

5.3V

The desired wireless transmission range of the headphones can impact the power requirements. Longer ranges often require higher transmitter power.

AA Nimh

AAA

5.3 V DC

5.3 V

Lithium

24 hr

2000 mAh

60Min

24 hr

120 hr

The mention of a "vibrating diaphragm" in your previous description may suggest a technology aimed at enhancing bass response or overall audio performance.

76 mm

67 mm

26 mm

0.1

120 g

40 g

NA

NA