Product Overview
Bincai’s velvet ring presentation box with LED spotlight and 360° rotating platform transforms the moment of reveal into a theatrical experience. The 2mm rigid greyboard construction wrapped in premium velvet flocking provides luxurious tactility, while the magnetic front-flap opens to activate three warm-white LEDs that illuminate the ring from optimal angles. The motorized rotating platform (1 RPM) slowly turns the ring for a complete view — powered by a whisper-quiet Mabuchi micro motor with 50+ hours of battery life. Ideal for engagement proposals, luxury jewelry retail, and high-end ring presentations.
Manufacturing Specifications
- Box Construction: 2mm rigid greyboard core, 180gsm velvet flocking wrap — seamless 4-corner wrapping
- LED Module: 3× warm-white SMD LEDs (3000K color temperature, CRi >90 for accurate gemstone color rendering)
- Power: 2× CR2032 coin cell batteries (replaceable), 50+ hours runtime, auto-off after 180 seconds
- Motor: Mabuchi micro DC motor (1 RPM, <25dB noise level), auto-activates on lid opening
- Platform: Die-cut ABS rotating disc with velvet flocking overlay, 38mm diameter
- Ring Securing: Die-cut slot with elastic retention band — fits US ring sizes 3-13
- Closure: Magnetic front-flap with invisible hinge, ≥3.5N holding force
- Exterior Finish: Hot foil stamping on lid — gold, silver, or rose gold
- Daily Output: 220,000+ rigid boxes
- Certifications: ISO 9001:2015, FSC Chain-of-Custody
Velvet Color Options
| Color | Code | Best For |
|---|
| Classic Black | BK-01 | Platinum, white gold, diamond rings |
| Royal Blue | BL-02 | Sapphire, diamond, silver rings |
| Ruby Red | RD-03 | Ruby, garnet, rose gold rings |
| Ivory White | WH-04 | Diamond solitaire, pearl rings |
| Emerald Green | GN-05 | Emerald, peridot, yellow gold rings |
| Burgundy | BG-06 | Ruby, garnet, vintage-style rings |
| Charcoal Grey | GY-07 | Contemporary, tungsten, titanium rings |
| Blush Pink | PK-08 | Morganite, rose quartz, rose gold rings |
Customization Options
| Option | Available Choices |
|---|
| Velvet Color | 8 standard colors + custom Pantone-matched flocking |
| Foil Stamping | Gold, silver, rose gold, copper, holographic — up to 3 colors |
| LED Color | Warm white 3000K (standard), cool white 5000K, RGB programmable |
| Ring Slot | Single ring (standard), dual ring, triple ring with removable tray |
| Platform | Motorized rotating (standard) or fixed manual display |
| Exterior | Velvet flocking (standard), leatherette, suede, or art paper wrap |
| Add-ons | Engraved metal nameplate, satin ribbon pull, magnetic gift card pocket |
| MOQ | 500 units (standard), 1,000+ (custom electronics programming) |
Industry Applications
| Use Case | Configuration | Key Feature |
|---|
| Engagement Proposal | Single ring + warm LED + slow rotation | Theatrical reveal moment |
| Luxury Jewelry Retail | Branded foil logo + custom velvet color | Premium in-store presentation |
| Wedding Band Set | Dual ring slots + rotating platform | His-and-hers simultaneous display |
| Jewelry Trade Show | Branded exterior + attention-grabbing rotation | Booth traffic driver |
| Anniversary Gift | Personalized foil message on lid | Sentimental presentation |
Electronics Specifications
| Component | Specification |
|---|
| LED Type | SMD 2835 warm-white, 3× units |
| Color Temperature | 3000K ±200K |
| CRi (Color Rendering) | >90 Ra |
| Battery | 2× CR2032 (3V, 225mAh each) |
| Runtime | >50 hours continuous (auto-off after 180s) |
| Motor Type | Mabuchi FF-N20PA micro DC |
| Rotation Speed | 1 RPM ±10% |
| Motor Noise | <25 dB at 30cm |
| Auto Activation | Magnetic reed switch — on when lid opens |
Production Quality
| Test | Standard | Specification |
|---|
| LED Function | 100% inspection | All 3 LEDs illuminate on lid open |
| Rotation Test | Internal | Continuous rotation 24h — no stalling |
| Magnetic Seal | Internal | ≥3.5N holding force |
| Velvet Adhesion | Internal | ≥2.5 N/cm² peel strength |
| Foil Alignment | Internal | ±0.5mm position accuracy |
| Drop Test | Internal | 1m drop — electronics functional after impact |
| Battery Life | Internal | ≥50 cycles (open/close) per battery set |
Why Choose Bincai
Bincai integrates precision electronics assembly with luxury rigid box manufacturing under one roof — a rare combination in the packaging industry. Our in-house electronics workshop handles LED module assembly, motor mounting, and reed switch testing before integration into the box line. ISO 9001:2015 quality management governs every stage from die-cutting to final QC, while FSC certification ensures responsible material sourcing. For jewelry brands seeking a proposal box that combines emotional impact with engineering reliability, Bincai delivers the complete package.
