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A square Arctic Blue sleep trainer clock with rounded edges and LCD face

LittleHippo Mella Sleep Trainer Clock Arctic Blue 2025

SKU CH-M1W7-80ZEM

A sleep trainer clock using colours and facial expressions to teach children when to stay in bed and when to wake, with three sleep sounds, five night-light colours.

  • TypeLCD
  • Size/Dimensions4.25 in x 4.25 in x 4.5 in
  • Color/FinishArctic Blue
  • Color MappingArctic Blue
  • Visual sleep cues keep children in bed longer using colour changes
  • All-in-one device combines sleep sounds, night light and alarm functions
  • Child-safe ABS and silicone construction meets multiple safety standards
  • Compact 4.25 in cube fits any bedside table
  • Updated 2025 model builds on 2016 Kickstarter success

All-in-One Sleep Trainer

The LittleHippo Mella combines a sleep trainer, night light, sound machine and alarm clock in one Arctic Blue unit. It uses colour cues and facial expressions to show toddlers when to stay in bed and when it is time to rise. Three sleep sounds and five night light colours help soothe younger children, while older children can use the alarm or silent countdown for timed activities. The 2025 update keeps the patented design recognised by Mashable and Yanko Design.

Safe Materials and Low Power

The clock is built from child-safe ABS and silicone and carries FCC, CE, RoHS, CA65, REACH and CPSIA approvals. Its LCD display and LED night light run on minimal power, producing no audible fan noise and negligible heat during overnight use. The compact 4.25 in by 4.25 in by 4.5 in footprint fits on any bedside table without crowding the space. Parents can leave it running all night without worrying about surface temperature or electricity draw.

Ready-to-Use Accessories Included

The package supplies the clock and a USB charging cable so it works straight out of the box. No separate app, subscription or additional hardware is required to access the three alarm tones, sleep sounds or colour settings. The simple button layout lets caregivers adjust wake times, brightness and volume without consulting a manual. Everything needed for sleep training and bedtime routines is provided in the single purchase.

Highlights

  • Visual sleep cues keep children in bed longer using colour changes
  • All-in-one device combines sleep sounds, night light and alarm functions
  • Child-safe ABS and silicone construction meets multiple safety standards
  • Compact 4.25 in cube fits any bedside table
  • Updated 2025 model builds on 2016 Kickstarter success

Specifications

TypeLCD
Size/Dimensions4.25 in x 4.25 in x 4.5 in
Color/FinishArctic Blue
Color MappingArctic Blue
BrandLittleHippo
ModelNight Light Sleep

Questions about this item

How do I set the OK-to-wake time on the LittleHippo Mella and what step do people miss?

Use the buttons on the base to program the wake time; the step often missed is confirming the setting so the face stays yellow 30 minutes before turning green at the set hour.

What parts of the Mella Arctic Blue will need replacement over time?

The internal rechargeable battery will eventually hold less charge after hundreds of cycles; the child-safe ABS and silicone housing and the LCD display are not user-serviceable.

What is the first limit you hit when running the Mella sound machine continuously?

Battery runtime is the first limit; the unit must be recharged via USB after extended overnight use of the three sleep sounds and night light colors.

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