Just like Kinera, its sub-brand Celest also has a background story for each of its products. The latest Relentless originates from the Chinese fantasy literature, “Shanhaijing”, Classic of Mountains and Seas. It tells the tale of Lass, the youngest daughter of Yan Di, who tragically drowned while swimming in the East China Sea. She was subsequently transformed into the bird known as Relentless. Relentless determined to prevent such a tragedy from befalling others. She took it upon herself to protect the living beings by reclaiming the Sea. The design and tuning theme of the pair is based on its tragic and heroic tale from fantasy literature.
Celest has equipped the Relentless with a seven-driver hybrid setup featuring a traditional combination of dynamic and balanced armature driver units. The pair houses an 8mm custom dynamic driver for a robust low-frequency and mid-frequency response. Two Celest Custom 29689 units produce a crisp, clear, and high-resolution mid-high frequency band. The four Celest Custom 10012 balanced armature drivers are here to produce an impeccable high-frequency band. The overall response with the pair is highly balanced producing a fast, deep-hitting bass response with clear and crisp vocals in the midrange, and exceptional instrument details in the treble region.
Celest along with Kinera has got years of expertise in designing IEMs. With a dedicated team of acoustic engineers, Celest Relentless brings a strong and powerful sound with a rich tonality. Relentless delivers full-bodied impactful bass response with rich layers and quick rebound. It has an accurate mid-range response with perfect response for instruments and vocals. And the treble has a smooth, delicate, charming presentation. The three-frequency band is perfectly balanced and we have a rich, warm tonality and a dense atmosphere as well. With expert tuning, Celest has achieved a pure high-resolution audio experience with the Relentless!!
Celest has joined hands with HeyGears, a premium 3D printing service provider from China. They have designed the ear cavities of the Relentless with high precision. The shells are made up of high-quality skin-friendly resin material. They boast exciting looks with hand-painted face plates by skillful artists. Sketched with a brush, the faceplates of Relentless feature intricate patterns depicting the feathers of the Relentless bird and the waves of the East China Sea!!
Celest Relentless comes with a set of high-quality accessories. The pair has eight sets of eartips featuring vocal, balanced eartips, and foam eartips. It comes with a 5N copper silver-plated high-quality stock cable with interchangeable plugs. We have a 3.5mm and a 4.4mm plug included in the package.
Thank you for shopping with thehificat.com. Please read our shipping policy carefully before placing your order.
In accordance with the latest EU Council regulations and customs guidelines, a new tariff system will take effect across all 27 EU member states (Austria, Belgium, Bulgaria, Cyprus, Croatia, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden) starting 1 July 2026.
Key Policy Change: The EU is abolishing the previous duty exemption for low-value parcels. From 1 July 2026, all goods declared through IOSS with a value not exceeding €150 will be subject to a fixed customs duty of €3 per HS tariff code category. All goods entering the EU — regardless of value — will now be subject to customs duties.
To ensure smooth customs clearance and transparent cost management, a handling surcharge of USD $5 has been applied to all standard shipments to EU countries (orders under $500). For orders over USD $500, expedited shipping remains complimentary.
| Countries | Estimated Delivery | Shipping Cost | Courier | Order Amount |
|---|---|---|---|---|
| Hong Kong SAR, Taiwan, Macao SAR | 3–5 working days | Free | Standard Shipping / SF Express | ALL |
| Singapore, Japan, South Korea, Malaysia, Thailand, Vietnam, Philippines, Cambodia, Laos, Myanmar, Brunei, Indonesia, Nepal | 5–15 working days | Free | Standard Shipping / Yunexpress | ALL |
| Saudi Arabia, United Arab Emirates | 5–15 working days | Free | Standard Shipping / Yunexpress | ALL |
| New Zealand, Australia | 10–15 working days | Free | Standard Shipping / Yunexpress | ALL |
| Countries | Estimated Delivery | Shipping Cost | Courier | Order Amount |
|---|---|---|---|---|
| United Kingdom | 5–10 working days | Free | Standard Shipping / Yunexpress | ALL |
| Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Estonia, Finland,Germany, France, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Portugal, Poland, Slovakia, Slovenia, Spain, Sweden, Switzerland | 10–15 working days | $5.00 USD | Standard Shipping / Yunexpress | $0–$500 |
| Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Estonia, Finland,Germany, France, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Portugal, Poland, Slovakia, Slovenia, Spain, Sweden, Switzerland | 5-10 working days | Free | Express Shipping / dhl | $500+ |
| Ukraine, Armenia, North Macedonia, Moldova, Monaco, San Marino, Vatican City, Serbia, Albania, Kosovo, Montenegro, Bosnia & Herzegovina, Belarus, Georgia, Andorra, Guernsey, Jersey, Faroe Islands, Svalbard & Jan Mayen, Guadeloupe, Réunion, Gibraltar, Isle of Man, Mayotte, Iceland, Liechtenstein, Norway, Turkey | 10–15 working days | Free | Standard Shipping / Yunexpress | ALL |
| Countries | Estimated Delivery | Shipping Cost | Courier | Order Amount |
|---|---|---|---|---|
| United States, Canada | 7–15 working days | $10.00 USD | Standard Shipping | ALL |
| Mexico | 7–15 working days | Free | Standard Shipping | ALL |
| Brazil, Peru, Colombia | 7–20 working days | Free | Standard Shipping / Yunexpress | ALL |
| Countries | Estimated Delivery | Shipping Cost | Courier | Order Amount |
|---|---|---|---|---|
| India, Russia, Israel, Qatar, South Africa, Morocco, Kenya, Nigeria, Ghana, Rwanda, Tanzania, Uganda, Angola | 7–20 working days | Free | Standard Shipping / Yunexpress | ALL |
| Other countries (Standard) | 10–20 working days | $30.00 USD | Standard Shipping / Yunexpress | ALL |
| Other countries (Express) | 5–7 working days | $50.00 USD | DHL Express | ALL |
| Coverage | Estimated Delivery | Shipping Cost | Order Amount |
|---|---|---|---|
| Most countries | 3–5 working days | $30.00–$50.00 USD | $0–$500 |
| Most countries | 3–5 working days | Free | $500+ |
⚠️ Note: Expedited shipping is on DAP (Delivered At Place) terms. Import duties and taxes are the responsibility of the recipient.
Standard Shipping (DDP): We ship on a Delivered Duty Paid (DDP) basis for most destinations. We work with a customs clearance agent to handle all import procedures — you will not be charged any additional fees upon delivery.
Expedited Shipping (DAP): If you select DHL Express, FedEx, or UPS, shipments are on a Delivered At Place (DAP) basis. Import duties and taxes are the responsibility of the recipient and will be collected upon delivery.
EU Customers (from 1 July 2026): A $5 USD surcharge applies to standard shipments to EU countries on orders under $500, to cover new mandatory customs processing fees.
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