M41 Bluetooth Headset Wireless Bluetooth Earphone

• Customization: Available
• Style: In-ear
• Usage: Mobile Phone, Call Center
• Model NO.: M41
• Soundtrack: Single Track
• Function: Bluetooth, Multimedia
• Characteristics: Support Music
• Color: Black
• Specifications: HFP
• Distance version: Class A
• Version: 5.1
• Cumulative Call Time: 220h
• Cumulative Play: 180h
• Cumulative Charging: 40 Times
• Music: Support
• Connect Material: Metal
• Transport Package: Colorbox
• Specification: OEM
• Trademark: CUSTOMIZED
• Origin: Jiangsu China
• HS Code: 8544421100
• Production Capacity: 50000PCS/Month

Product Description

Model No.	M41
Jack Type	USB Micro
Battery Capacity for Earbud	45mAh
Working Time	6 hours
Charging Time for Earbud	30-45 Mins
Woking Distance	10m
Charging Voltage	DC5V 1A

Portable Media Player, Mobile Phone, Aviation, COMPUTER, Dj, Gaming, Sports, Audiophile, Travel, PROFESSIONAL, HEARING AID, For Internet Bar, For iPod, HiFi Headphone, with flashlights.
Specifications of Bluetooth earphones: HSP, HFP, A2DP

As for purchasing Bluetooth earphones, due to the numerous brands of mobile phones and earphones, the most troublesome issue for consumers is the compatibility issue between mobile phones and Bluetooth earphones. The manufacturer pointed out that Bluetooth earphones come in three specifications: HeadsetPro file (HSP), HandfreeProfile (HFP), and A2DP. HSP provides the basic functions required for communication between mobile phones and earphones. HandfreeProfile (HFP) adds certain extension features on the basis of HeadsetPro file (HSP), originally only used to control mobile phones by securing the car hands-free device from Bluetooth headphones. A2DP (Advanced Audio Transfer Specification) - allows the transmission of stereo audio signals. Compared to mono encryption used for HSP and HFP, the quality is much better. Determine the compatibility between headphones and mobile phones.

Among them, the HFP format Bluetooth earphones support relatively complete mobile phone functions, and consumers can simultaneously operate the phone's pre-set hands-free options such as redial, call reservation, and call rejection on the earphones. Taking Bluetooth earphones launched by several major manufacturers as an example, almost all of them mainly support HFP format.

In addition, when consumers purchase Bluetooth products, they often encounter the problem of how to choose the Bluetooth technology version. The different Bluetooth versions are related to the quality of the received signal, and the new version emphasizes the ability to overcome noise interference. Moreover, all the latest Bluetooth versions are designed to be backward compatible with all previous versions, and 2.0 and 1.1 devices can also be freely connected. 3.0 has strong compatibility and is a relatively mature technology, Bluetooth 4.0 is also compatible with higher and lower versions, and the battery life has also increased due to technical prompts. Consumers should weigh the price and demand when purchasing.

The usage distance of Bluetooth earphones: not only depends on the earphones

Another important determinant of Bluetooth earphones is the transmission distance, which is not related to the Bluetooth version but depends on the Bluetooth technology PowerClass. Most mobile phones and devices use PowerClass2, with a standard transmission distance of 10 meters; The upgraded PowerClass1 increases the transmission distance to 100 meters, and both versions support A2DP stereo transmission protocol, which can be connected to stereo headphones. Generally speaking, the distance between a mobile phone and Bluetooth earphones is not too far. If there is no large obstacle in the middle, the transmission quality is good within 7 meters, and there will be a breakpoint if it exceeds 8 meters! Bluetooth devices exceeding 10 meters will lose connection.

According to the actual feeling of use, the distance between the phone and Bluetooth earphones is directly proportional to the call noise; In addition, when using stereo Bluetooth earphones to listen to music, do not be too far away from the phone, otherwise it is easy to have intermittent phenomena. Many consumers hang Bluetooth earphones on their ears at any time, so styling has become a basic requirement; And everyone has different ear shapes, so users need to try wearing comfort before making a purchase; People wearing glasses need to be more careful, as many Bluetooth earphones may conflict with the legs of the glasses on the ear hook,