Including the triple flange eartips but excluding the cable connector it's roughly 25mm (1 inch)

How do these deal with noisy/loud environments?

These are perfect for noisy environments, you won't be able to hear any outside noise. I was at an indoor Netball games and could not hear any of the high pitched whistles being blown at all. These IEMS are really good.

Are these geared more towards professionals? Im a casual listener, but I'm looking to upgrade to something more serious than regular cheap earbuds.

Speaking as a professional, yeah they have a pretty neutral and accurate sound with very good isolation, which I greatly appreciate because I can't stand exaggerated consumer-oriented sound signatures. It sounds better than anything else remotely close to this price. However, to achieve this great isolation and accuracy, you have to use those 3-flange tips and insert them properly (very deeply-as deep as they'll go). It takes a bit getting used to and may present a comfort issue for some, but for me, it wasn't a big deal and I got used to it quickly with no discomfort.

Are the foam or silicone flange tips more effective at noise isolation?

I find the triple flange silicone tips better in my ears. But I have narrower than normal ear canals so the foam does not fit very well.

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Description

🎧 Elevate your audio game—hear what others miss!

TOUCH VOLUME CONTROL - Effortlessly adjust your audio without reaching for your device, keeping you in the zone.
LIGHTWEIGHT DURABLE - At just 190g, these earphones combine portability with robust build quality for daily hustle.
ERGONOMIC IN EAR DESIGN - Comfort meets isolation—stay focused in work, gaming, or music with a secure, noise-isolating fit.
PRECISION AUDIO CLARITY - Experience studio-grade sound with balanced armature drivers that deliver every note with stunning accuracy.
UNIVERSAL WIRED CONNECTIVITY - Plug and play seamlessly with any device featuring a 3.5mm jack—no adapters, no fuss.

The Etymotic Research ER2XR Extended Response in-ear earphones feature balanced armature drivers for superior sound clarity, a universal 3.5mm wired connection compatible with a wide range of devices, and an ergonomic in-ear design with touch volume control. Lightweight and durable, these earphones are perfect for professionals seeking immersive audio during work, gaming, or music sessions.

Specifications

Headphones Jack	3.5 mm Jack
Model Name	ER2XR
Connectivity Technology	Wired
Wireless Communication Technology	Bluetooth
Age Range (Description)	Adult
Material	Plastic
Specific Uses For Product	Music, Gaming, Work/Office
Compatible Devices	Smartphones, Tablets, Laptops, Desktops, Gaming Consoles, Music Production Equipment
Control Type	Volume Control
Item Weight	0.19 Kilograms
Style	In-ear
Control Method	Touch
Number of Items	1
Cable Length	4 Feet
Audio Driver Type	Balanced Armature Driver
Series number	2
UPC	846430002203
Input Device Interface	Audio jack
Special Feature	in-ear
Global Trade Identification Number	00846430002203
Manufacturer	Etymotic Research
Model	ER2XR
Item model number	ER2XR
Special Features	in-ear
Batteries Included	No
Batteries Required	No
Form Factor	In Ear, In ear
Does it contain liquid?	No
Includes Rechargeable Battery	No
Includes AC Adapter	No
Manufacturer	Etymotic Research
Item Weight	190 g

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