Compared with the built-in type (the battery is located on the earphone), the internal earphone is thinner and does not squeeze the ear, which is more comfortable.
Large-capacity battery: Up to 450mAh, (built-in type is about 250mAh), which makes the standby time and working time of the whole machine longer.
Fix the main unit with screws and bayonet: make the main unit installation tighter, and the high-speed riding is not easy to fall off. (The built-in type usually uses glue or hook&loop)
Use high-power audio amplifier: Make the audio volume range larger, and it will not affect music playback and telephone answering in the noise environment of high-speed riding.
High quality amp chip, can restore BT audio with high sound quality.
BT version: 4.1+EDR CSR8635
Support agreement: A2DP AND AVRCP
Lithium battery: 450MAH
Charging voltage / current: DC5V/190ma
Working time: about 10 hours
Mobile phone connection distance: 50 meters
Size: approx. 8.5 * 5 * 2cm / 3.3 * 2 * 0.8in