How We Research
We compare products from their published specs and features; the verdicts below are our independent editorial opinions.
Updated: 2026-09-17 · 6 min read · Independent comparison
• Rinsmola 5.4's biggest strength: a full Bluetooth 5.4 earbud package — 14.2mm graphene drivers, IP-X7 waterproofing, 40 hours total playtime and four ENC mics, all in a 3.6g-per-bud design.
• Rinsmola 5.4's biggest trade-off: it uses passive noise cancellation, not active ANC, so it isolates noise physically rather than electronically.
• RLSOCO Hard Case's biggest strength: a hard EVA and fiber shell with RoHS/SGS-certified materials that guards against knocks, shock, dust and splashes.
• RLSOCO Hard Case's biggest trade-off: it is case only — no earbuds, no charging cable, and it is built specifically around the Anker Soundcore Liberty 5 Pro/5 Pro Max shape.
• Pick Rinsmola 5.4 if you need the actual audio hardware.
• Pick RLSOCO Hard Case if you already own Liberty 5 Pro/5 Pro Max buds and want sturdier protection than the stock charging case.
The Rinsmola 5.4 (model G21 PRO) is built around three everyday problems: battery anxiety, sweat, and muffled calls. On battery, the numbers are straightforward — 6 to 8 hours from a single charge, plus another 36 hours from the charging case for a 40-hour total, with a 1.5-hour recharge over USB-C. A dual LED display on the case shows the power level of the box from 0–100% and of each bud while charging, which matters more than it sounds: you stop guessing whether you have enough juice for a two-hour commute. The case itself weighs 34g with a matte anti-sweat coating, so it genuinely disappears into a jeans pocket.
Who should buy it: gym-goers, runners and cyclists who need IP-X7 sweat and rain resistance, anyone who takes a lot of calls in noisy places, and people who want Bluetooth 5.4 pairing (1-second flash pairing, 20m range, 31ms latency) across phones, tablets, laptops and TVs. Three ear-tip sizes (S/M/L) and a 3.6g bud help with fit across different ear shapes. Who should skip it: if you want true active noise cancellation for flights, or you are buying specifically for Anker Soundcore Liberty 5 Pro buds, this isn't that product.
RLSOCO Hard Case: Who It's For
The RLSOCO Hard Case is a single-purpose accessory, and it's honest about it: case only, earbuds and cables not included. It's designed to fit the Anker Soundcore Liberty 5 Pro and Liberty 5 Pro Max along with charging cables and small extras, at 3.11 x 3.03 x 1.97 inches — compact enough for a purse, backpack or handbag pocket.
Where it earns its place is materials and protection. The shell combines fiber material with high-density EVA, and RLSOCO states the fabric, lining and EVA compartments are RoHS/SGS certified eco-friendly materials, with a thicker EVA grade chosen so the case resists deforming. The practical result is a hard shell rated water resistant and described as dust, scratch and shock resistant — the kind of thing that stops your charging case from getting crushed at the bottom of a bag or scuffed in a gym locker. It's a solid purple with a polyester exterior, and it carries a two-year warranty.
Who should buy it: anyone who already owns Liberty 5 Pro or Liberty 5 Pro Max earbuds and wants a sturdier, better-organized home for them than the standard charging case — travelers, commuters with crowded bags, and people who've had a case crack or get scratched before. Who should skip it: if you don't own those specific Anker buds, or if you're shopping for earbuds rather than storage, this is the wrong purchase entirely.
• Best for actually listening to music → Rinsmola 5.4. It's the only one of the two that makes sound.
• Best for battery life → Rinsmola 5.4. 6–8 hours per charge, 40 hours total with the case, 1.5-hour recharge.
• Best for workouts and rain → Rinsmola 5.4. IP-X7 waterproofing plus an anti-sweat matte case coating and grippy sandblasted texture.
• Best for call clarity in noise → Rinsmola 5.4. Four ENC mics with passive isolation of roughly 80% of external noise.
• Best for protecting Anker Liberty 5 Pro/5 Pro Max → RLSOCO Hard Case. Purpose-built compatibility, hard EVA shell, water resistant.
• Best for travel and bag organization → RLSOCO Hard Case. Compact 3.11 x 3.03 x 1.97-inch form factor, dust and scratch resistant, two-year warranty.
• Best for low-latency gaming and video → Rinsmola 5.4. 31ms audio latency with Bluetooth 5.4.
• Best as a gift for an Anker owner → RLSOCO Hard Case — assuming you know which buds they have.
If I had to pick one, I'd buy the Rinsmola 5.4. In my opinion, it's the better purchase for most people because it's a complete product — you get the earbuds, the charging case, the cable and the ear tips in one box, with IP-X7 protection and 40 hours of total playtime covering gym, commute and calls. The RLSOCO Hard Case is genuinely well-made for what it is, and I'd recommend it without hesitation to someone who already owns Liberty 5 Pro or Liberty 5 Pro Max buds and wants tougher protection. But it can't replace earbuds, and it only fits one specific family of them. Buy Rinsmola 5.4 unless you already have those Anker buds in hand.
FAQ
No. It is case only — earbuds, charging cables and accessories are not included. It's designed to hold the Anker Soundcore Liberty 5 Pro or Liberty 5 Pro Max and small extras, so you need to own those buds already for it to make sense.
Not active ANC — it uses passive noise cancellation, physically blocking sound, and its four ENC microphones are there to keep your voice clear for the person on the call. If you want electronic ANC for flights, this isn't the right spec for you.
Both products are listed on Amazon, and prices change often, so check the current price on Amazon using the button on this page before deciding — I don't quote prices here because they move.
As an Amazon Associate I earn from qualifying purchases.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon and affiliated sites.
When you buy through links on this page, we may earn a commission from qualifying purchases at no extra cost to you.
Amazon and the Amazon logo are trademarks of Amazon or its affiliates. This site is an independent third-party review and is not affiliated with, endorsed by, or sponsored by Amazon or the product brands mentioned.