--- product_id: 235316453 title: "RN 120 C Rear Bike light 120 Lumens with Smart Brake Function Bicycle Taillights Type-C Rechargeable Ultra Bright IPX6 Waterproof for Day and Night Riding Safety, Warning Mountain Cycling" brand: "olight" price: "2425143₫" currency: VND in_stock: true reviews_count: 8 category: "Olight" url: https://www.desertcart.vn/products/235316453-rn-120-c-rear-bike-light-120-lumens-with-smart store_origin: VN region: Vietnam --- # 120 lumens ultra bright 1-hour USB-C quick charge IPX6 waterproof durability RN 120 C Rear Bike light 120 Lumens with Smart Brake Function Bicycle Taillights Type-C Rechargeable Ultra Bright IPX6 Waterproof for Day and Night Riding Safety, Warning Mountain Cycling **Brand:** olight **Price:** 2425143₫ **Availability:** ✅ In Stock ## Summary > 🚴‍♂️ Light up your ride, own the road! ## Quick Answers - **What is this?** RN 120 C Rear Bike light 120 Lumens with Smart Brake Function Bicycle Taillights Type-C Rechargeable Ultra Bright IPX6 Waterproof for Day and Night Riding Safety, Warning Mountain Cycling by olight - **How much does it cost?** 2425143₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/235316453-rn-120-c-rear-bike-light-120-lumens-with-smart) ## Best For - olight enthusiasts ## Why This Product - Trusted olight brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Smart Brake Sensor:** Instantly signals braking with a motion-activated 3-second burst of full brightness—because every second counts. - • **Adaptive Ambient Light:** Automatically adjusts brightness to match your environment, ensuring optimal visibility day or night. - • **Intelligent Flash Modes:** Dynamic flashing patterns shift based on light intensity, making your ride unmistakably noticeable. - • **Effortless USB-C Recharge:** Power up in just 60 minutes with fast, universal charging—never get caught in the dark again. - • **Brilliant 260° Visibility:** Stay seen from every angle with a wide translucent housing that maximizes your safety on the road. ## Overview The OLIGHT RN 120 C is a compact, rechargeable rear bike light delivering 120 lumens of ultra-bright illumination with 260° visibility. Featuring smart brake and ambient light sensors, it intelligently adapts brightness and flashing modes for maximum safety. Its IPX6 waterproof rating and quick 1-hour USB-C charging make it a reliable companion for all weather conditions and rides. ## Description Shop OLIGHT RN 120 C Rear Bike light 120 Lumens with Smart Brake Function Bicycle Taillights Type-C Rechargeable Ultra Bright IPX6 Waterproof for Day and Night Riding Safety, Warning Mountain Cycling. Free delivery and returns on all eligible orders. Review: A good bike back light - One of my favourite brands. The back light with 6 steps lighting modes. The light brightens in sudden braking - inertial sensor built-in. Precisely manufactured in every detail. Review: Small, simple, effective - So far it has put up with lots of gnarly winter rides. The weather hasn't killed it, nor have my falls. It is easy to charge, easy to fit on the bike and gives a good amount of light. Good product. ## Features - 【BRIGHTER AND WIDER LIGHT】 The RN 120 C has a maximum output of 120 lumens, with 260° visibility, offering complete protection thanks to the translucent housing - 【AMBIENT LIGHT SENSOR】 The built-in light sensor automatically adjusts brightness based on ambient lighting conditions - 【INTELLIGENT MOTION SENSOR】 The motion sensor automatically turns on when braking and illuminates for 3 seconds with a maximum of 120 lumens - 【INTELLIGENT MODE】 When intelligent mode is active, the intelligent shifter automatically changes the flashing pattern based on the intensity of the ambient light - 【BRAKE MODE】 When braking mode is active, parking for 5 minutes without detecting vibrations will automatically turn the lights off. When vibration is detected again, the lights will resume operation. the brightness of the march - 【RECHARGEABLE BIKE TAILLIGHT】Quick charging via USB-C, fully charging within 1 hour ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08HH95ZZM | | Batteries | 1 Lithium Ion batteries required. (included) | | Batteries included? | Yes | | Best Sellers Rank | 15,033 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) 32 in Cycling Taillights | | Brand | OLIGHT | | Color | Black | | Customer Reviews | 4.6 4.6 out of 5 stars (420) | | Date First Available | 4 Sept. 2020 | | Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. | | Height | 3.2 millimetres | | Item display length | 3 centimetres | | Item display width | 3.4 centimetres | | Item model number | RN120C | | Manufacturer | OLIGHT | | Material type | Plastic | | Number of items | 1 | | Power source | Battery Powered | | Product Dimensions | 3.5 x 3.4 x 3 cm; 26 g | | Sport | Cycling | | Weight | 26 g | ## Product Details - **Brand:** OLIGHT - **Brightness:** 120 - **Colour:** Black - **Item weight:** 26 Grams - **Material:** Plastic - **Mounting type:** Seatpost Mount - **Number of settings:** 3 - **Power source:** Battery Powered - **Product dimensions:** 30L x 34W x 32H millimetres - **Water resistance level:** Waterproof ## Images ![RN 120 C Rear Bike light 120 Lumens with Smart Brake Function Bicycle Taillights Type-C Rechargeable Ultra Bright IPX6 Waterproof for Day and Night Riding Safety, Warning Mountain Cycling - Image 1](https://m.media-amazon.com/images/I/61MRtdmTuaL.jpg) ## Questions & Answers **Q: How long does a charge last on RN 120** A: Depends on the mode you use it in, I think, but it’s good for 12 hours or so **Q: A couple of reviews mention the light turning off...is this in smart or interactive mode? can this be overridden by using a different mode?** A: I cannot answer your question as I only tried to use it a couple of times, I found it to be poor and unreliable, with a full charge it only lasted half an hour or so. Very dissapointing. **Q: Does this fir under a Brooks B17 saddle?** A: My OLIGHT RN 120 came with TWO forms of mounting bracket, both of which should work with all conventional saddles. 1). There is a simple frame made of springy plastic that clips on to the saddle rails. It provides a bayonette mount facing backwards that the lamp clicks on to with a clockwise twist. This frame can come unclipped if mishandled, so a couple of small cable ties are supplied to secure it. 2). A similar bayonette mount on a silicone rubber strap is also part of the kit. It will fit under the saddle on the seat tube like most cycle rear lights do. Naturally, you will need to ensure that nothing is mounted behind either mount to prevent a clear view of the light from the rear. On my electric bike I have a large wire mesh basket that is taller than the saddle, so I fastened the strap-on mount to the back of it using the two cable ties through the mesh. I did not need to cut the strap at all, which is good if ever I want to reuse it. I hope this is helpful. **Q: How do you turn on the brake mode? I have tried all three modes (flash, constant, smart) and none seem to activate the brake mode** A: Two things got this to work for me, make sure the button is facing up, and from off, press and hold for 5 seconds. ## Customer Reviews ### ⭐⭐⭐⭐⭐ A good bike back light *by C***M on 18 December 2025* One of my favourite brands. The back light with 6 steps lighting modes. The light brightens in sudden braking - inertial sensor built-in. Precisely manufactured in every detail. ### ⭐⭐⭐⭐⭐ Small, simple, effective *by C***R on 13 March 2025* So far it has put up with lots of gnarly winter rides. The weather hasn't killed it, nor have my falls. It is easy to charge, easy to fit on the bike and gives a good amount of light. Good product. ### ⭐⭐⭐⭐⭐ A useful piece of kit. *by G***T on 5 December 2025* A good light, easy to install with a good output. ## Frequently Bought Together - OLIGHT RN 120 C Rear Bike light 120 Lumens Type-C Rechargeable Ultra Bright Smart Bicycle Taillights, IPX6 Waterproof for Day and Night Safety Warning Mountain Cycling - OLIGHT RN 400 Bike light 400 Lumens USB Rechargeable Bicycle Headlights IPX7 Waterproof LED Safety and Sensing Mountain Cycling for Daily Commuting and Urban Riding --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/235316453-rn-120-c-rear-bike-light-120-lumens-with-smart](https://www.desertcart.vn/products/235316453-rn-120-c-rear-bike-light-120-lumens-with-smart) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-05-22*