ONOLA ON3870 Men's Automatic Mechanical Watch, Skeleton Dial, Silicone Strap, 30M Water Resistant
- Automatic mechanical movement — no battery changes required
- 30M water resistance handles rain and splashes with confidence
- 53mm barrel-shaped alloy case with mineral glass — bold wrist presence
- Soft silicone strap with stainless steel pin buckle stays secure
- Free Shipping Over $69
- Secure Checkout
- 30-Day Money-Back Guarantee
- 1-Year Warranty
For men who want a watch that looks as active as their schedule, the ONOLA ON3870 pairs a skeletonized automatic movement with a 53mm barrel-shaped case. It is built for the gym, the commute, and everything in between.
Automatic Movement, No Battery
The mechanical movement winds as the wrist moves, so there is no battery to replace. The open skeleton dial puts the gears on display, giving the watch a technical look that stands out from standard quartz faces.
Built for Movement
The 53mm alloy case is fitted with a mineral-reinforced glass lens, and the silicone strap stays comfortable through sweat and long wear. A stainless steel pin buckle keeps the fit secure during training or travel.
Water Resistance for Daily Wear
Rated 30M, the watch handles rain, hand washing, and splashes at the sink. It is made for everyday conditions rather than swimming or diving.
Seven Colorways
Choose from black, black-orange, silver-red, silver-blue, rose-white, rose-black, and silver-white to match a sporty wardrobe or a specific outfit.
Specification Summary
Model ON3870, 53mm case diameter, 15mm thickness, onion crown, pointer display, silicone strap, alloy case, mineral glass lens, stainless steel buckle. Ships from Guangdong, China. Store warranty included.





| Brand | ONOLA |
|---|---|
| Model | ON3870 |
| Movement | Automatic mechanical |
| Movement Origin | China |
| Case Material | Alloy |
| Case Shape | Barrel |
| Case Diameter | 53mm (2.09in) |
| Case Thickness | 15mm (0.59in) |
| Crystal | Mineral reinforced glass |
| Strap Material | Silicone |
| Buckle | Stainless steel pin buckle |
| Crown Type | Onion crown |
| Display | Analog |
| Water Resistance | 30M |
| Target Audience | Men |
| Style | Sport |
| Weight | 130g (4.59oz) |
| Colors | Black, Black-Orange, Silver-Red, Silver-Blue, Rose-White, Rose-Black, Silver-White |
| Place of Origin | Guangdong, China |
| Warranty | Store warranty |
Shipping
Processing time: Orders are prepared within 2–5 business days.
Shipping time: 7–14 business days for most destinations, depending on your location.
Shipping rates: Free shipping on orders over $69. Standard shipping from $7.99. Final rates are shown at checkout.
Tracking: All packages include tracking. We email the tracking number after dispatch.
Customs: Import duties and taxes are the customer's responsibility.
Returns
30-day returns: You have 30 days from the original ship date to return your item.
Condition: Items must be unused, unworn, and in the original packaging.
Refunds: Refunds are processed within 5–10 business days after we receive the return.
Questions? Email support@fantastreet.com.
Frequently Asked Questions
Q1. Can this watch be worn while swimming?
A: The watch is rated 30M, which covers rain and splashes. It is not intended for swimming or diving.
Q2. Does the automatic movement need a battery?
A: No. The mechanical movement is powered by the motion of the wrist, so there is no battery to replace.
Q3. How does the 53mm case fit on a wrist?
A: The case measures 53mm across and 15mm thick, making it a large, statement-sized watch. Buyers who prefer a smaller profile should note these dimensions before ordering.
Q4. What is included with the watch?
A: The watch ships with the silicone strap attached and is covered by a store warranty.
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