For B2B buyers, the practical difference between cordless and plug-in heated shoulder wraps is how they are powered and where they can be used. LK-SM001 and LK-RSM001 provide cable-free operation, while LK-SPM001 uses mains power and removes the need for battery charging. The right choice depends on mobility, feature combination, coverage area and how the product will be positioned.
The Three Shoulder Wrap Models at a Glance
| Attribute | LK-SM001 | LK-RSM001 | LK-SPM001 |
|---|---|---|---|
| Power source | Cordless, built-in battery (Type-C) | Cordless, built-in battery (Type-C) | Plug-in, mains (no battery) |
| Heat | 45°C, 65°C, 75°C (+ OFF) | 45–55°C | 45–55°C |
| Red / near-infrared light | Not included | 660/850 nm, 76 LEDs | 660/850 nm, 165 LEDs, dimmer, 10–40 Hz pulse |
| Vibration massage | Yes (3 levels + off) | Yes (3 levels) | Not included |
| Battery / run time | 5000 mAh / ~2 h | 5000 mAh / ~1 h | No battery (mains) |
| Rating | 5V/2A, 7.5W | 5V/2A, 10W | 110/220V, 40W |
| Form | Shoulder wrap | Shoulder wrap | Shawl (shoulder + back) |
| Weight | 480 g | 540 g | 1100 g |
LK-SM001 — Rechargeable Heat and Vibration
The LK-SM001 is built for portable, cable-free use. Its built-in 5000 mAh battery charges over Type-C in about 3 hours and gives roughly 2 hours of use per charge at 5V/2A and 7.5W. Heat is delivered through three settings — 45°C, 65°C and 75°C — with an OFF state that switches the warmth off; the OFF state is a shutdown, not a fourth temperature step. Two motors provide three selectable vibration levels, which suits buyers who want a combined warming and massage feel in one SKU. The wrap uses CR+PU material, measures 45×32×1 cm and weighs 480 g.
LK-RSM001 — Rechargeable Red and Near-Infrared Light, Heat and Vibration
The LK-RSM001 adds light features to the cordless format. It carries 76 LEDs at 660 nm and 850 nm with an irradiance of 50–90 mW/cm² and L1–L5 light modes, alongside temperature control within a catalog-stated range of 45–55°C and three vibration levels (M1/M2/M3). The 5000 mAh battery gives about 1 hour of use per 3-hour Type-C charge at 5V/2A and 10W. The CR+TPU wrap measures 36×34 cm and weighs 540 g.
LK-SPM001 — Plug-In Red and Near-Infrared Light and Heat, No Vibration
The LK-SPM001 is a plug-in model: it draws mains power (110V/220V, 40W) and has no battery, so there is no charging cycle to manage. Plug-in operation with a 10–90 minute timer and no battery charging requirement keeps sessions bounded by the timer rather than a battery. It combines red and near-infrared light features (165 LEDs at 660/850 nm, dimmer support, a 10–90 minute timer and a 10–40 Hz pulse range) with temperature control within a catalog-stated range of 45–55°C. Importantly, the LK-SPM001 does not include vibration — this was confirmed by the supplier, not inferred from the catalog. It is a warming and light device in a shawl style that covers the shoulder and upper back. The CR+TPU material, 50×34 cm size and 1100 g weight suit stationary wellness and relaxation use.
Choose Cordless When, Choose Plug-In When
Choose cordless when
- Buyers need a device that moves with the user and no outlet is nearby.
- A lightweight wrap (480–540 g) with 1–2 hours of battery run time fits demos or mobile service.
- Either LK-SM001 (heat + vibration) or LK-RSM001 (heat + vibration + red/near-infrared light) matches the brief.
Choose plug-in when
- The device stays in a fixed location and a 40W mains supply is acceptable.
- A shawl covering shoulder and back is preferred over a compact wrap.
- Red and near-infrared light plus heat is wanted without vibration — the LK-SPM001.
Sample Evaluation Checklist for Bulk Buyers
- Confirm the power source fits the use site: cordless (LK-SM001, LK-RSM001) or plug-in (LK-SPM001).
- Verify heat: LK-SM001 offers 45°C, 65°C and 75°C; the other two use a 45–55°C range.
- If red and near-infrared light is required, shortlist LK-RSM001 or LK-SPM001 and check wavelength, LED count and dimmer or pulse options.
- Decide on vibration: included on LK-SM001 and LK-RSM001, not on LK-SPM001.
- Discuss order quantity, pricing and lead time with the supplier. General order quantities may start from 100 pieces; final MOQ, price and lead time depend on the selected model, configuration and customization requirements.
- Request the applicable electrical, battery, labeling and market-access documentation for the selected model and destination market.
- Evaluate a supplied sample for material feel, fit, control layout and overall warming comfort before committing to a bulk order.
Frequently Asked Questions
What is the difference between cordless and plug-in heated shoulder wraps?
Cordless models such as LK-SM001 and LK-RSM001 use a built-in battery for portable, cable-free use, while the plug-in LK-SPM001 draws mains power and removes the need for battery charging. The choice affects mobility, run time and where the device is used.
How many heat settings does LK-SM001 offer, and what do they mean?
LK-SM001 provides three heat settings – 45 degC, 65 degC and 75 degC – plus an OFF state. The OFF state is a shutdown between uses, not a fourth temperature step, so buyers should specify it as a 3-level device.
Does LK-SPM001 include vibration?
No. LK-SPM001 does not include vibration; this was confirmed by the supplier rather than taken from the catalog specification. Buyers who need vibration should consider LK-SM001 or LK-RSM001, which both include it.
Which models use red and near-infrared light?
LK-RSM001 and LK-SPM001 use red and near-infrared light features at 660 nm and 850 nm wavelengths. LK-SM001 is a heat-and-vibration model without light features, so it is the choice when light is not required.
How should buyers confirm certification and market-access documentation?
Loyalkins catalogs list marks such as CE, FCC, RoHS and FDA for some models; these are supplier-stated and have not been independently verified in this article. Buyers should confirm the applicable electrical, battery, labeling and market-access documentation for the selected model and destination market.
What is the minimum order quantity for these shoulder wraps?
General order quantities may start from 100 pieces, but this is a company-level figure. The final MOQ depends on the selected model, configuration and customization requirements, so confirm the exact number with the supplier.
How should a buyer evaluate a sample before a bulk order?
Evaluate a supplied sample for material feel, fit, control layout and overall warming comfort before committing to a bulk order. It also helps to confirm heat behaviour, light output and any vibration function against the specification sheet.