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

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

Product ID: 16311149

Details

Brand
TC Electronic
Color
standart
Item Weight
0.03 Kilograms
Product Dimensions
1"L x 2"W x
Style
Clip

⚡Super precise strobe mode ±0.02 cent accuracy

🎸Polyphonic tuning all 6 strings at once

💡108-LED ultra-bright adaptive display

KSh22578

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Description

🎶 Tune like a pro, look like a star—never miss a beat with PolyTune Clip!

TUNE EVERY STRING IN A FLASH - PolyTune tech lets you tune all 6 strings simultaneously—no more waiting, just instant precision.
SEE CLEARLY TUNE CONFIDENTLY - Ultra-bright 108 LED matrix display adapts to any angle or lighting, perfect for backstage or daylight gigs.
VERSATILE MODES FOR EVERY PLAYER - Switch effortlessly between polyphonic, chromatic, strobe, flat tuning, and capo modes to match your style.
BUILT TO LAST DESIGNED TO IMPRESS - Sleek stainless steel clip combines durability with elegance—clip it, flaunt it, and never miss a beat.
PRECISION THAT HITS THE RIGHT NOTE - Extra-accurate strobe mode with ±0.02 cent tuning ensures your sound is studio-grade sharp.

The TC Electronic PolyTune Clip is a cutting-edge clip-on guitar tuner featuring polyphonic technology to tune all six strings simultaneously, a 108-LED adaptive display for easy reading in any environment, and an ultra-precise strobe mode with ±0.02 cent accuracy. Designed with a durable stainless steel clip and multiple tuning modes including chromatic, flat, and capo, it offers unmatched speed, precision, and style for both electric and acoustic players.

Specifications

ASIN	B00ZU4G0ZK
Amperage	0.1 Milliamps
Best Sellers Rank	#4,446 in Musical Instruments ( See Top 100 in Musical Instruments ) #80 in Music Tuning Accessories
Brand Name	TC Electronic
Color	standart
Connector Type	1/4 inch audio jack
Controls Type	Knob
Customer Reviews	4.6 4.6 out of 5 stars (3,181)
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	1 x 2 x 3 inches
Item Dimensions L x W x H	1"L x 2"W x 3"H
Item Type Name	Guitar Tools
Item Weight	0.03 Kilograms
Manufacturer	Music Tribe US
Manufacturer Part Number	P0DFU
Model Name	Polytune Clip-On Polyphonic Tuner
Model Number	POLYTUNE CLIP
Power Source	Battery Powered
Signal Format	Analog
Style	Clip
UPC	713803229850
Unit Count	1.0 Count
Voltage	240 Volts
Warranty Description	1 year parts and labor.

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KSh22578

Duties & taxes included

In stock

Sold byAmazon KenyaDelivered 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 Kenya.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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