Sollen SL502 Automatic Watch - Men's Stainless Steel 7-Bead Bracelet Open-Heart Seiko NH39A Wristwatch
Packaging Details
Packaging & Presentation
Original Brand Packaging
Every watch is shipped in its official brand-specific presentation box. Depending on the brand selected, your timepiece will arrive in its corresponding original packaging designed to protect and present the product.
To ensure the best protection during transit, timepieces are packaged using either brand-branded presentation boxes or unbranded premium display boxes, distributed at random based on batch availability.
What’s Included in Your Package
Regardless of the brand, every order includes:
- Protective Presentation Box: Either brand-logo stamped or sleek unbranded design with an interior cushion.
- Instruction Manual: Guide for watch adjustment, operation, and maintenance.
- Authenticity / Warranty Card: Official product documentation.
- Spare Strap & Adjustment Tool: Included with select models (where applicable, to easily adjust or customize your bracelet).
- Heavy-Duty Outer Box: Extra protective shipping carton to ensure safe delivery.
(Random display)


Secure Delivery Assurance
All items are carefully inspected and secured with protective cushioning before shipment. You will receive a tracking number as soon as your order is dispatched.
The Sollen SL502 Automatic Watch merges contemporary technical layout with traditional open-heart mechanics. Built with a 42mm solid stainless steel chassis weighing 166g, this premium timepiece houses an authentic Seiko NH39A automatic caliber, featuring a 4-hand multi-function configuration visible through an exhibition caseback. Protected by a flat scratch-resistant sapphire crystal lens, the hydraulic sunburst copper dial highlights a dedicated 11 o’clock 24-hour register alongside a striking 10 o’clock open-heart skeleton flywheel. Completed with custom skeleton hands and a fluid 7-bead solid link bracelet with a double-press butterfly clasp, it offers an uncompromised professional statement.
| Feature | Specification |
| Model | SL502 |
| Movement | High-Grade Authentic Seiko NH39A 4-Hand Multi-Function Automatic Mechanical Core |
| Functions | Center Hour, Minute, Sweeping Center Seconds, 11H 24-Hour Subdial, 10H Open-Heart Flywheel |
| Power Reserve | Kinetic Self-Winding Powered by Daily Wrist Movement (Manual Winding Supported) |
| Case Material | Premium Solid Selected Stainless Steel Chassis |
| Case Dimensions | Diameter: 42mm | Total Thickness Profile: 11.4mm |
| Crown & Stem | Selected Stainless Steel Ordinary Crown & Stem Framework |
| Dial Plate Craft | Hydraulic Stamped Fine Copper Substrate with Sunburst Texture & Skeleton Layout |
| Hands Profile | Selected Polished Fine Copper Architectural Skeleton Hands (Non-Luminous / 无夜光) |
| Crystal Lens | Round Flat Scratch-Resistant Synthetic Sapphire Glass Mirror |
| Caseback Layout | Threaded Screw-Down Stainless Steel See-Through Exhibition Window (锁底/透底) |
| Water Resistance | 30 Meters (3 ATM) Daily Waterproof Enclosure |
| Plating Process | Advanced Vacuum Furnace Ion Plating (IPG Gold / IPRG Rose Gold Accent Finish) |
| Band Type | Premium 7-Bead Solid Stainless Steel Interlinked Link Bracelet |
| Band Dimensions | Fitting Width: 21mm * 20mm | Segment Thickness: 3.5mm | Single Link Length: 90mm |
| End-Links Feature | Solid Precision-Engineered End-Links Included (实心头粒) |
| Clasp Configuration | Premium Stainless Steel Double-Press Security Butterfly Clasp |
| Internal Component | Solid Shock-Absorbing Plastic Casing Spacer Enclosure |
| Total Weight | Entire Finished Build: ~166g (Substantial Mechanical Quality Feel) |