New beeBluetooth Headset, Wireless Bluetooth Earpiece for Cellphone with 500mah Charging Case 80h Playtime V5.2 Dual Mic Noise Cancelling Hands-Free Earphones for Office Driver

Upgraded from my New Bee M50 from about 2 years ago due to its usb-c port failed. It was an easy fix if you have rudimentary electronics skills and a soldering iron. But I bought this new M15 headset anyway.How is it different? aside from the self activating charging case, there are actually some differences between the two headsets, even though it shared many of the fundamental technologies such as bluetooth chipset and noise cancelation processor. Both are capable of handling two devices paired and connected, and have the build in mute button that everyone loves.While the main gripe on M50 users revolves around fitting issues, the M51 overall was designed with the focus to over come those short coming with better ergonomics in mind, and it does achieve that goal. However with some sacrifices such as:Smaller speaker driver. M50 has a large conventional speaker, which deliver richer sound, where as M51 relies on a speak stem which allow better in ear fitting, but the audio is less rich, but slightly louder.Smaller headset battery. The battery compartment is obviously smaller to achieve a better fitting, means shorter talk time. But now you can use battery from the case to charge your headset. I do notice there might be a bit of a parasitic drain if you leave the headset in the case for a while , but I haven't fully confirmed it.Interestingly enough the charging case is bidirectional PD. If you have it plugged into a usb charger that might be under powered, such as a small solar panel, it will drain the charger base's battery. And no, it cannot charge other USB devices with this mechanism, as I have tested that theory.Both headsets are fantastic, especially for those need to be on a call for many hours in noisy environments. the M51 is very capable for most application where you need to be connected for 10+ hrs on a shift. However M50 boasts a full 24hr+ talk time, for those who require something mission critical for extended operations.Something to note is that the first M51 I've received had a defective charging case battery life counter where the digits were not formed properly . New Bee Support was responsive, but their answer was dubious telling me that it will resolve itself. Being someone who's somewhat electronically capable didn't buy that answer , so I've simply exchanged for another one. Gotta love that Amazon exchange policy. Second headset was flawless, and I've using for a full month wth no issues.So whats the take away? M51 is a great upgrade from the M50 and it is suitable for most everyone. Unless you have a need for the continuous 24+hr talk time (which I do sometimes) , and better sounding driver. Then you'd want the M50.

Works great. I drive a box truck so it’s a little noisy. Connects to 2 phones easily, easy to hear and be heard, easy to use. Does what it’s supposed to. Best earpiece I’ve owned so far. Love it

Absolutely a waste of money. If there's a breeze nobody can hear me, the speaker is awsome but useless as a truckers headset. From a trucker.

This hands free device works well. It is "Old School" larger than most hands free devices these days, but the quality of calls is probably better for it. Incredible range as I have been as far as 150 feet from my phone and still didn't drop the connection. Charge lasts a good amount of time even when remaining on and in stand bye.

Uncomfortable, too heavy on the ear, but overall ok

I give 3 stars bc it broke 3 months in to buying it. It's a much better version of the plantronics version except for build quality. Much louder on the speaker, much clearer on the microphone and it literally lasts all day and then some. I'm a truck driver and that matters alot. If only it didn't fall apart for no reason.

It was a good material, I am satisfied

Product needs to go back to research & development. The ear arm digs into the back of your ear. You will notice minor discomfort for a while, then when you take it off, that's when the pain starts. Would be a good product if they included more size ear arms.