Design and features:This Bluetooth wireless portable ear-insert model provides very good sound. Although it lacks active noise reduction, the ear plug-like design helps to reduce both outside noise and sound leaking out into your environment. The Endurance Peak 3 has a volume control plus an integrated microphone and player function controls. Additional features include - Either earpiece can be used alone for one ear monitoring of Bluetooth streamed audio and telephone communications. Carrying case/charging cradle has built-in rechargeable battery that the manufacturer claims can be used to add an additional 40 hours of play time for a total of 50 hrs. Manufacturer claims dust and water resistance (IP68). Has touch controls with default settings for music player transport, call connect/disconnect, ambient sound monitoring, and digital voice assistant activation. Has Bluetooth pairing alert tones. Has speed charge feature: 10 min of charging will provide 1 hr. of playtime. Supports Apple Siri, Google Assistant, and other digital voice assistants when used with Bluetooth connected devices that have those features. Supports multi-point connection for two Bluetooth devices. JBL headphones app download for Apple and Android mobile devices can be used to show battery level, enable ambient mode, customize touch controls to swap volume control for one of the other controls, adjust the earphone's tonal balance, create custom or use pre-made EQ presets, disable voice prompts, and update the earphone's firmware. Has Smart Audio & Video mode setting that enables best sound quality for audio and best audio/video sync (low latency) for video. Bluetooth connected Apple mobile devices using iOS Version 5 and above will show the battery level. The Endurance Peak 3 comes with 3 pairs of ear pieces in various sizes, one pair of ear bowl supports, USB-A to USB-C connector charging cable, charging cradle/recharger battery/carrying case, Warranty Booklet, Quick Start Guide.
Sound quality:We found the Endurance Peak 3 delivers sound quality that falls in the very good range - it reproduces music and voice very well although it does have some noticeable sonic quirks. With the Equalizer and ambient monitoring mode set to off using the JBL Headphone app (as received state of the earphone) the bass (as in bass drums, bass guitars, stand-up bass, etc.) has good impact and goes deep, but is somewhat prominent and boomy. The midrange (voices, guitars, horns, etc.) is even but is a bit hazy, grainy and congested (think sonic traffic jam). The treble (cymbals, the upper range of violins, etc.) is extended, but is a bit prominent, sizzly (sounds that should have a delicate shimmer have a sound reminiscent of bacon frying), smeared and dry. The sound also has a good sense of liveliness and is somewhat open--sound-wise it almost seems like you don't have anything plugging up your ears and does a decent job of recovering room ambience. Mixed character; warmish bass and midrange, and coolish treble. The overall sound can best be summarized as a somewhat bassy, and a bit grainy, sizzly and smeared. The tone settings of the app do have a noticeable effect on the sound of these earphones.
Comfort and Fit:We found that these earphones produce as typical of in-ear models they produce a sense of pressure in the ear canal opening that might be uncomfortable for some, and due to the ear hooks some users may find that it takes some futzing to get them into place.
Small
Users with small ear bowls might find that the earphone body feels a bit bulky in their ear bowl and that they stick out far, but that they will stay in place during casual use and are very stable during vigorous head movement.
Medium/Large
Users with medium and large sized ear bowls will probably find that this model stays in place with no problems for casual use and that they are stable during vigorous head movement.
Incidental contact with the touch controls can cause unintentional playing, pausing or ambient sound monitoring.
Eyeglass wearers may find that the ear hooks interfere with the eyeglass temples.
Hitting the top front portion of the ear hook can knock an earphone loose.
