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The CALLIN KELIEN 9101 (51-18-145) belongs to the LC Retro Memory Titanium Series, combining vintage aesthetics with modern material science. Featuring memory titanium temples that flex without deforming and a widened frame & temple design, this model delivers exceptional comfort for extended wear.
Key Functional Attributes:
Memory Titanium Temples: Ultra-flexible legs bend up to 90° and return to original shape – no loosening over time
Widened Frame & Temple Design: Increased surface area reduces pressure points behind the ears and on the nose bridge
Lightweight Construction: Memory titanium is 40% lighter than standard stainless steel alloys
51-18-145 Fit: Medium-large coverage for comfortable all-day wear
Design Philosophy:
The LC Series draws inspiration from 1950s–1970s retro eyewear silhouettes, reimagined with contemporary ergonomics. The widened temples evoke classic brow-line frames while accommodating modern wide-field prescription lenses.
Face Shape Compatibility:
✅ Square faces: Softens angular jawlines with rounded retro curves
✅ Round faces: Adds definition and structure through widened temples
✅ Oval faces: Universal fit – highlights balanced proportions
❌ Not recommended for very narrow faces (below 130mm width)
Ideal Wearers:
Digital workers (reduces temple pressure during long screen hours)
Progressive lens users (widened frame accommodates wider reading zones)
Customers who frequently take glasses on/off (flex arms prevent hinge stress)
Those with wider head shapes or sensitive temples
Geometric Features:
Front frame: Subtle cat-eye curvature with softened endpoints
Temple arms: Tapered wide-to-narrow profile for gradual pressure distribution
Bridge: 18mm saddle bridge – fits medium to high nose bridges comfortably
Color & Style Matching:
| Color | Best Paired With |
|---|---|
| Matte Black | Business attire, minimalist wardrobes |
| Tortoiseshell | Vintage outfits, autumn tones |
| Gunmetal | Cool-toned skin, silver jewelry |
| Transparent Crystal | Modern, artistic, or avant-garde looks |
Material Source & Durability Standards:
Memory titanium alloy: Grade 5 Ti-6Al-4V (imported from Japan)
Flex tested: 50,000+ bend cycles without permanent deformation
Corrosion resistance: Salt spray tested 48 hours (ISO 9227)
Hinge screws: Stainless steel with anti-loosening threadlock
B2B Customization Capabilities (OEM/ODM):
✅ Custom laser engraving (logo, model number, inside temple)
✅ Color matching (Pantone/RAL for custom coatings)
✅ Custom packaging (paper box, leather case, or recycled fabric pouch)
✅ Private labeling on demo cards and cleaning cloths
✅ Modified bridge widths (17-19mm) for local market preferences (MOQ applies)
Payment & Logistics:
Payment: T/T (30% deposit), L/C, Western Union, Alibaba Trade Assurance
Samples: Available within 5-7 business days via DHL/FedEx
Bulk shipping: Sea freight (20-35 days) or air freight (7-12 days)
Ports: Yantian (Shenzhen) / Shanghai
After-Sales Service:
24-month warranty against titanium breakage or coating peeling
30-day defect return window (excluding prescription lenses)
Spare temple screws included with bulk orders (100+ pieces)
Company Strength:
CALLIN KELIEN operates a 20,000m² ISO 13485:2016 certified optical factory with 15 years of B2B eyewear export experience. We serve 300+ clients across 40+ countries with a 99.2% on-time delivery rate. In-house tooling and injection molding capabilities ensure fast OEM turnaround.
Q1: How is "memory titanium" different from regular titanium?
A: Memory titanium (also called superelastic titanium) contains a specific alloy ratio that allows it to bend significantly and return to its original shape without permanent deformation. Regular titanium is rigid and will bend permanently under similar stress.
Q2: The specs say 51-18-145. Can you adjust these for my market?
A: Yes. For OEM orders (MOQ 500 pieces), we can modify lens width (49-53mm), bridge (17-19mm), and temple length (140-150mm) to fit your local anthropometric data.
Q3: Will the widened temples look bulky on small faces?
A: The design is proportioned for medium to wide faces (≥135mm head width). For smaller face shapes, we recommend our LC Series model 9103 (narrower 49-17-140). Request both samples for comparison.
Q4: Can I order mixed colors within one batch?
A: Yes. For bulk orders of 500+ pieces, we accept mixed color assortments with a 10% surcharge for small-batch color changes.
Q5: Are prescription lenses compatible with these frames?
A: Yes. The 51mm lens width accommodates single vision, bifocal, and progressive lenses up to -8.00 / +6.00 diopters. We also offer lens glazing services for OEM partners.
