does this do open tuning?

Not specifically, it reads out the note that is being played. You can tune the strings to whatever notes you like as it is a chromatic tuner, but it does not have specific settings for open tunings.

What is detection accuracy in polyphonic mode?

I don't know for sure but since the other answer described the display of the notes, I'm going to guess that the polyphonic mode (though dependent on your instrument) probably reads 'in tune' when the pitches are within 1-2 cents of the assumed pitches. I too would like to know Polytune's official answer to your question. I'm assuming their .02 cents refers to a totally pure, fundamental heavy articulation of the note being measured. Plucking technique and observer bias can cause all sorts of different observations (accuracy/inaccuracy) but intonation of Em7sus4 chords are definitely averages of harmonic content, I'm not sure it's possible to decide on a specific frequency (at a resolution of .02 cents) when the instrument is moving sympathetically to other pitches. The Polyphonic feature is really for when you don't have time to tune it note by note but you need to have the confidence that you'll be close enough not to come across as deaf to your own sound.

Is the auto off defeatable? A few minutes is unacceptable. I need it to stay on.

I’m not sure what you’re using it for, but if your stringed instrument won’t stay in tune for more than a few minutes, you might need a more robust instrument. And it should stay on as long as it’s recognizing the tuning activity. I’ve never had one power off while I’m tuning up. Play hard, rock on.

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TC Electronic POLYTUNE CLIP Clip-On Tuner with Polyphonic, Strobe and Chromatic Modes and 108 LED Matrix Display for Ultimate Tuning Performance

Product ID: 48375024

Details

Brand
TC Electronic
Colour
Black
Item weight
0.03 Kilograms
Product dimensions
25L x 51W x
Style
Clip

🎯±0.02 cent ultra-precise strobe accuracy

🎸Polyphonic tuning all 6 strings simultaneously

💡108 ultra-bright LED matrix display

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Description

🎵 Tune smarter, perform sharper—be the envy of every gig!

CRYSTAL CLEAR VISUALS - Ultra-bright 108-LED matrix ensures perfect visibility on any stage or studio setup.
ADAPTIVE AMBIDEXTROUS - Auto-rotating display and left/right-hand modes keep you in sync with your style and setup.
STEALTHY STYLISH BLACK - Discreet matte black design blends seamlessly with your gear—tune up without the spotlight stealing.
TUNE LIKE A PRO INSTANTLY - Polyphonic mode lets you tune all strings at once—no more waiting, no more guesswork.
PRECISION THAT DEMANDS RESPECT - Strobe tuner with ±0.02 cent accuracy for flawless pitch every time.

The TC Electronic PolyTune Clip is a cutting-edge clip-on tuner featuring polyphonic, strobe, and chromatic modes with a blazing 108-LED matrix display. It offers ultra-precise tuning with ±0.02 cent accuracy, adaptive screen orientation for left- and right-handed players, and a sleek black design that fits discreetly on any guitar headstock. Perfect for quick stage tune-ups or detailed setups, it supports flat, capo, and bass tuning modes, retaining your settings even after power down. Battery-powered with up to 3 months of use, it’s the ultimate companion for professional musicians seeking flawless pitch and effortless style.

Specifications

ASIN	B00ZU4G0ZK
Amperage	0.1 Milliamps
Audio Output Effects	Chorus, Delay
Brand Name	TC Electronic
Colour	Black
Connector Type	Clip
Controls Type	Knob
Country of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (3,120)
Global Trade Identification Number	05706622021847
Hardware Interface	1/4-inch Audio
Included Components	TC Electronic POLYTUNE CLIP, Clip-On Tuner with Polyphonic, Strobe and Chromatic Modes and 108 LED Matrix Display for Ultimate Tuning Performance
Item Dimensions	25 x 51 x 76 millimetres
Item Dimensions L x W x H	25L x 51W x 76H millimetres
Item Type Name	Guitar Tools
Item Weight	0.03 Kilograms
Manufacturer	TC Electronic
Manufacturer Part Number	P0DFU
Model Name	Polytune Clip-On Polyphonic Tuner
Model Number	POLYTUNE CLIP
Number of Items	1
Power Source	Battery Powered
Product Warranty	2 year manufacturer.
Set Name	PolyTune Clip
Signal Format	Analog
Style	Clip
UPC	713803229850
Unit Count	1 count
Voltage	240 Volts

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₹ 8915

Duties & taxes included

In stock

Sold byAmazon IndiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to India.

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Join PRO →

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TrustScore 4.5 | 7,300+ reviews

Pooja R.

The customer service exceeded my expectations. Perfect for buying products you can't find elsewhere.

1 week ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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