---
product_id: 79392066
title: "Alarm Clocks for Bedrooms with Battery Backup, Auto Set"
brand: "dreamsky"
price: "¥12646"
currency: JPY
in_stock: true
category: "Dream Sky"
url: https://www.desertcart.jp/products/79392066-alarm-clocks-for-bedrooms-with-battery-backup-auto-set
store_origin: JP
region: Japan
---

# Auto DST & 7 US time zones Battery backup for power outage 5-inch large LCD display Alarm Clocks for Bedrooms with Battery Backup, Auto Set

**Brand:** dreamsky
**Price:** ¥12646
**Availability:** ✅ In Stock

## Summary

> ⏰ Wake smarter, not harder — the DreamSky way!

## Quick Answers

- **What is this?** Alarm Clocks for Bedrooms with Battery Backup, Auto Set by dreamsky
- **How much does it cost?** ¥12646 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/79392066-alarm-clocks-for-bedrooms-with-battery-backup-auto-set)

## Best For

- dreamsky enthusiasts

## Why This Product

- Trusted dreamsky brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual USB Ports:** One powers the clock, the other charges your phone—declutter your nightstand with ease.
- • **Power Outage Proof:** Long-lasting battery backup keeps your settings intact even during blackouts.
- • **Set It & Forget It:** Auto sets time, date, and temperature instantly—just pick your time zone and wake-up time.
- • **Smart Time Zone & DST:** Automatically adjusts for Daylight Savings and supports 7 US time zones plus Newfoundland.
- • **Crystal Clear 5-Inch Display:** Eye-care dimmable screen with 6 brightness levels + auto dim for perfect bedside visibility.

## Overview

The DreamSky Alarm Clock features a large 5-inch dimmable LCD display showing time, date, and temperature. It auto-sets time with selectable US time zones and Daylight Savings adjustments. Battery backup ensures settings stay intact during power outages. Dual USB ports provide clock power and device charging, making it a sleek, reliable bedside essential.

## Description

Buy DreamSky Alarm Clocks for Bedrooms with Battery Backup, Auto Set | Digital Clock with Date & Day of Week, 5 Inch Large Display, Weekday, Temperature, USB Port, Auto DST, Brightness Dimmer: Alarm Clocks - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

## Features

- Large Display with Full Range Dimmer: 5 inches Large LCD screen with nice eye care number display. Time, date and temperature display. Almost full range brightness settable (6 levels + auto dim ), you can easily change to have the view bright or dim it to extremely low.
- Auto Set Time: The alarm clock will set itself to right time, date and temperature immediately once plugged in. The long lasting button cell backup battery (installed ) will holds all settings and ensure the time always be accurate in case of main power interrupted. What you need to do is set your time zone and wake up time. Simple as that. Even miss the right time, you are still able to set it manually.
- Auto DST and selectable time zone: Automatically adjusts to Daylight Savings Time while set the DST on. Seven USA time zone (EST/ CST/ MST/ PST/AST/HAT/AKT) and one newfoundland time zone NST selectable for your location.
- Beeping alarm with snooze: A beeping alarm sound will wake you up naturaly and the alarm volume is not adjustable. Only single alarm available. Additional snooze to counter oversleeping, simply press the snooze button once and go back to sleep. 8 minutes later the alarm will ring again.
- Plug in clock with single USB charging port: the digital clock come with two usb ports, one is to power the clock (1.5 meter USB cable is included), ther other USB charging port can be used to charge cellphone and other electronic device. 3 x AAA batteries( not included) as backup, which will store the setting and keep the time works in case of main power outage.
- IMPORTANT: 1) pleae kindly know the item is ONLY an alarm clock WITHOUT radio function. 2) About Auto Set Feature: America time is downloaded (preset) to the clock during production so there is no need to set the clock manually once received the item.
- Clock Size: Length 6.2 inches x Height 4.1 inches x Width 1.5 inches; USB cable length: 1.5 meters

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07G34JD32 |
| Additional Features | auto dimmable, self setting, date, day of week, thermometer, auto dst, battery backup, electric clock for desk, nightstand, bedside, living room, bedroom, office, small gifts |
| Alarm Clock | Yes |
| Best Sellers Rank | #14,902 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #65 in Alarm Clocks |
| Brand Name | DreamSky |
| Clock Form | Multi Display |
| Color | Black |
| Connectivity Technology | USB |
| Customer Reviews | 4.6 4.6 out of 5 stars (20,487) |
| Dial Color | Black |
| Display Type | Digital |
| Frame Material | Plastic |
| Indoor Outdoor Usage | Indoor |
| Item Dimensions W x H | 6.1"W x 4"H |
| Item Highlight | Digital Clock with Date & Day of Week, 5 Inch Large Display, Weekday, Temperature, USB Port, Auto DST, Brightness Dimmer |
| Item Weight | 10.56 ounces |
| Manufacturer | DreamSky |
| Manufacturer Part Number | DS313 |
| Material Type | Plastic |
| Model Number | 8541847857 |
| Mounting Type | Tabletop |
| Number of Batteries | 1 CR2032 batteries required. |
| Number of Items | 1 |
| Number of Packs | 1 |
| Operation Mode | Electrical |
| Power Source | Battery Powered, Corded Electric |
| Room Type | Bedroom |
| Screen Size | 5 inches |
| Shape | Rectangular |
| Size | Small |
| Style Name | digital clock |
| Theme | bedroom, living room, guest room, bedside, office, desk, table, nightstand, |
| UPC | 675234184620 |
| Unit Count | 1 Count |
| Watch Movement | digital alarm clock |

## Product Details

- **Brand:** DreamSky
- **Color:** Black
- **Display Type:** Digital
- **Indoor/Outdoor Usage:** Indoor
- **Power Source:** Battery Powered, Corded Electric
- **Product Dimensions:** 6.1"W x 4"H
- **Room Type:** Bedroom
- **Shape:** Rectangular
- **Style:** digital clock

## Images

![Alarm Clocks for Bedrooms with Battery Backup, Auto Set - Image 1](https://m.media-amazon.com/images/I/71EDzmCftYL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Is the time supposed to set automatically?**
A: Yes, but it will always set it 2-3 minutes slow. Even if you manually adjust it, it will reset itself slow again within days.

**Q: Does the auto dst icon only come on after the 2nd sunday in march?**
A: This is not an atomic clock and the description is misleading. The clock has a watch-like CR-2032 behind the regular AA batteries that keeps the time, but the time has to be set manually. The description says it's auto set, but this is a lie. If you take the CR-2032 battery out and put it again, time will reset to 12:00 and it will never auto set to the right time again, you have to do it manually. The time on the clock when you first received it, it's whatever time it was set at the factory, it will never auto set to the perfect time since this is not an atomic clock. Also, even if you do set manually, there is no way to set the seconds, thus, the clock will never show the perfect time, you will always have at least a minute of difference.

**Q: What is the small cord with tiny end on backside of clock?**
A: The clock is electric, it is a USB cord that goes into a plug that goes into the outlet.

**Q: What is the warrranty information**
A: Seller warranty: One year free replacement.

## Frequently Bought Together

- DreamSky Alarm Clocks for Bedrooms with Battery Backup, Auto Set Digital Clock with Date and Day of Week, Temperature, USB Port, Auto DST, Dimmer, 12/24H
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**Shop now:** [https://www.desertcart.jp/products/79392066-alarm-clocks-for-bedrooms-with-battery-backup-auto-set](https://www.desertcart.jp/products/79392066-alarm-clocks-for-bedrooms-with-battery-backup-auto-set)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-20*