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If you want cheap true-wireless earbuds that actually play music and take calls, choose Bluedio Headphones; if you need a protective carry case for a pair of GravaStar Sirius Pro earbuds you already own, choose CaseSack GravaStar Sirius Pro.
These two products share almost nothing except the word "earbuds" somewhere in their descriptions. One is a pair of budget TWS earphones with a charging case in the box. The other is a semi-hard shell that holds a pair of earbuds — no earbuds included. That single fact decides the comparison before we get any further, so let me walk through what each one actually is.
• Bluedio Headphones — biggest strength: It's a complete, working TWS setup: Bluetooth 5.0 earbuds, a 600mAh charging case, four sizes of ear tips, and a USB cable, all designed to pair in one step and play for hours.
• Bluedio Headphones — biggest trade-off: It's an older Bluetooth 5.0 design with no active noise cancellation and no wireless charging pad — the case itself charges over USB, and the spec sheet lists a 3.5 mm jack in the connectivity fields, which is odd for a true-wireless product and worth verifying against the listing.
• CaseSack GravaStar Sirius Pro — biggest strength: A compact, semi-hard, water-resistant shell (3.5 x 2.5 x 2 inches, 1.7 ounces) with an elastic strap and a mesh lid pocket, built to keep a specific pair of earbuds and a cable organized and protected.
• CaseSack GravaStar Sirius Pro — biggest trade-off: It's a case only. No earbuds, no cable, no charger. If you don't already own GravaStar Sirius Pro earbuds, this product does nothing for you.
• Pick Bluedio Headphones if you want an affordable all-in-one wireless earbud kit for running, workouts and calls.
• Pick CaseSack GravaStar Sirius Pro if you already own GravaStar Sirius Pro earbuds and want to stop them rattling loose in a bag.
The Bluedio Hurricane-HI is a classic entry-level TWS package, and it's honest about what it is. Bluetooth 5.0 handles the connection, with support for A2DP, HSP, HFP and AVRCP — the standard profile set that covers stereo music and hands-free calling. Range is listed at 10 meters, which is normal for this class and fine for leaving your phone on a bench while you move around a gym floor.
Battery is where the design gets interesting. The earbuds themselves are rated around 6.25 hours of average life, and the 600mAh charging case is spec'd to refill them roughly four times, for about 20 hours of total extra playtime. Charging is quick — about an hour for the buds, two hours for the case. That's a sensible split: short bursts on the buds, a bigger reservoir in the case.
The feature that stands out most in the spec sheet is the face-recognition control. Instead of an infrared sensor, Bluedio uses a recognition-based trigger so that pulling the right earbud out pauses playback and putting it back in resumes it. Whether the marketing name lives up to the physics, the practical outcome is the same: auto-pause when you take one bud out. For anyone who yanks an earbud out to talk to a cashier, that's a genuinely useful behavior.
Comfort and fit are addressed with ergonomic, lightweight housings and super-soft liquid silicone tips in multiple sizes, and the enclosure is metal rather than plastic — a small durability plus at this tier. Audio specs list a dynamic driver, 32 ohm impedance, and a 20Hz–20kHz frequency range.
Who should buy it: someone who wants a self-contained pair of wireless earbuds for running, the gym, commuting or casual calls, and who values a big charging case and auto-pause over premium audio or noise cancellation. Who should skip it: anyone who needs active noise cancellation (the noise control field says "None"), anyone who wants wireless charging, and anyone chasing audiophile-grade sound — this is a value-focused design, not a flagship. If price is your deciding factor, check the current price on Amazon via the button on this page rather than trusting a number from anywhere else.
Read the title carefully: this is a case for GravaStar Sirius Pro earbuds. It is not the earbuds. The package contains one CaseSack carrying case and nothing else — the device and accessories are explicitly not included. That makes this a completely different kind of purchase: an accessory for people who already own a specific pair of TWS RGB earbuds and want somewhere safe to put them.
What you get is a semi-hard shell measuring 3.5 x 2.5 x 2 inches and weighing 1.7 ounces. The exterior is EVA (ethylene vinyl acetate) with a PEVA lining, described as pressure- and hit-absorbing and water-resistant. In practice that means it shrugs off the knocks, shakes and scratches that happen when earbuds get tossed into a backpack, purse or suitcase. It is not a crush-proof vault — "semi-hard" is the honest description — but it's a big step up from a loose pocket.
The internal layout is thoughtfully done. An elastic strap holds the earbuds secure against the base so they don't slide around, and a mesh pocket in the lid gives the charging cable and small accessories a home of their own. The one-piece, all-in-one format means you're not hunting for a cable in a separate pouch. A zipper closure keeps everything contained. CaseSack backs it with a one-year warranty.
Side-by-Side: Which Should You Choose?
• Best complete package out of the box → Bluedio Headphones. Earbuds, charging case, four ear tip sizes and a USB cable are all included.
• Best for battery capacity → Bluedio Headphones. Roughly 6.25 hours per charge on the buds plus a case rated to recharge them about four times, for around 20 additional hours.
• Best for protecting earbuds you already own → CaseSack GravaStar Sirius Pro. Semi-hard EVA shell, water-resistant lining, elastic strap and mesh pocket.
• Best for travel and bag organization → CaseSack GravaStar Sirius Pro. At 1.7 ounces and 3.5 x 2.5 x 2 inches, it disappears into a purse or carry-on and keeps the cable contained.
• Best for workouts and running → Bluedio Headphones. Ergonomic, lightweight housings with multiple silicone tip sizes, and auto-pause when you remove the right bud.
• Best for active noise cancellation → neither. Bluedio lists noise control as "None," and a case obviously doesn't cancel anything.
• Best if you own nothing yet → Bluedio Headphones. The CaseSack is only useful as a companion to earbuds you already have.
• Best value for a first-time TWS buyer → Bluedio Headphones, in my opinion, simply because it's the only one of the two that actually produces sound.
In my opinion, the answer depends entirely on what you already own, which is unusual for a head-to-head like this. If you're shopping for your first or next pair of cheap TWS earbuds, I'd buy the Bluedio Headphones — it's a complete, self-contained kit with a generous charging case, one-step pairing, and the auto-pause-on-removal behavior that genuinely changes how you use earbuds day to day.
If you already have GravaStar Sirius Pro earbuds and they keep ending up loose at the bottom of a bag, I'd buy the CaseSack GravaStar Sirius Pro instead — it's a tidy, light, semi-hard home for them and their cable. Just don't buy it expecting earbuds to arrive. RECOMMENDED_ASIN: B07VCHNPPW
FAQ
TWS stands for "true wireless stereo" — two earbuds with no wire between them, each connecting independently over Bluetooth. Both products here sit in that world: the Bluedio Hurricane-HI is a TWS earbud set, and the CaseSack GravaStar Sirius Pro is a carry case made for a specific TWS model.
what is tws earbuds means
It means the left and right earbuds talk to each other and to your phone wirelessly, with no connecting cable. The Bluedio kit demonstrates the full TWS setup — Bluetooth 5.0 earbuds, a charging case, and one-step pairing where the buds connect to each other automatically once removed from the case.
how much is tws earbuds
Pricing for TWS earbuds varies enormously by brand, features and build, and it changes over time, so I don't quote numbers here. Check the current price on Amazon using the button on this page for both the Bluedio earbuds and the CaseSack case before deciding.
how to tws earbuds
For the Bluedio Hurricane-HI, the process is straightforward: long-press the multi-function button for about 10 seconds to power on, then open your phone's Bluetooth menu, find the device named "Hi," and connect. After the first pairing, leaving the earbuds in the case and using the case's charging button lets them power on and reconnect automatically when you take them out.
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